diff --git a/CMakeLists.txt b/CMakeLists.txt
index a456298c..12820127 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,7 +14,7 @@ project (boss)
 set (BOSS_SRC "${CMAKE_SOURCE_DIR}/src/metadata.cpp" "${CMAKE_SOURCE_DIR}/src/game.cpp" "${CMAKE_SOURCE_DIR}/src/helpers.cpp" "${CMAKE_SOURCE_DIR}/src/plugin/ModFormat.cpp" "${CMAKE_SOURCE_DIR}/src/plugin/VersionRegex.cpp")
 
 # Include source and library directories.
-include_directories ("${BOSS_LIBS_DIR}/alphanum" "${BOSS_LIBS_DIR}/utf8" "${BOSS_LIBS_DIR}/boost" "${BOSS_LIBS_DIR}/yaml-cpp/include" "${CMAKE_SOURCE_DIR}/src")
+include_directories ("${BOSS_LIBS_DIR}/alphanum" "${BOSS_LIBS_DIR}/utf8" "${BOSS_LIBS_DIR}/boost" "${BOSS_LIBS_DIR}/yaml-cpp/include" "${CMAKE_SOURCE_DIR}/src" "${BOSS_LIBS_DIR}/libloadorder/src")
 
 ##############################
 # Platform-Specific Settings
@@ -37,32 +37,30 @@ ENDIF ()
 
 # Settings when compiling and cross-compiling on Linux.
 IF (CMAKE_HOST_SYSTEM_NAME MATCHES "Linux")
-    set (BOSS_LIBS yaml-cpp boost_filesystem boost_system boost_regex)
+    set (BOSS_LIBS loadorder yaml-cpp boost_filesystem boost_system boost_regex)
     set (CMAKE_C_FLAGS  "-m${BOSS_ARCH}")
     set (CMAKE_CXX_FLAGS "-m${BOSS_ARCH}")
     set (CMAKE_EXE_LINKER_FLAGS "-static-libstdc++ -static-libgcc")
     set (CMAKE_SHARED_LINKER_FLAGS "-static-libstdc++ -static-libgcc")
     set (CMAKE_MODULE_LINKER_FLAGS "-static-libstdc++ -static-libgcc")
 
-    link_directories ("${BOSS_LIBS_DIR}/yaml-cpp/build/")
+    link_directories ("${BOSS_LIBS_DIR}/yaml-cpp/build")
+    link_directories ("${BOSS_LIBS_DIR}/libloadorder/build")
     link_directories ("${BOSS_LIBS_DIR}/boost/stage-${BOSS_ARCH}/lib")
 
     IF (CMAKE_SYSTEM_NAME MATCHES "Windows")
-        link_directories ("${BOSS_LIBS_DIR}/yaml-cpp/build/")
-        link_directories ("${BOSS_LIBS_DIR}/boost/stage-mingw-${BOSS_ARCH}/lib")
+    link_directories ("${BOSS_LIBS_DIR}/boost/stage-mingw-${BOSS_ARCH}/lib")
     ENDIF ()
 ENDIF ()
 
-# Settings when not cross-compiling.
-IF (CMAKE_SYSTEM_NAME MATCHES CMAKE_HOST_SYSTEM_NAME)
-    link_directories ("${BOSS_LIBS_DIR}/yaml-cpp/build/")
-    link_directories ("${BOSS_LIBS_DIR}/boost/stage-${BOSS_ARCH}/lib")
-ENDIF ()
-
 ##############################
 # Actual Building
 ##############################
 
+# Build API.
+add_library           (boss "${CMAKE_SOURCE_DIR}/src/api.cpp" ${BOSS_SRC})
+target_link_libraries (boss ${BOSS_LIBS})
+
 # Build tester.
-add_executable        (parser-tester "${CMAKE_SOURCE_DIR}/src/tester.cpp" ${BOSS_SRC})
-target_link_libraries (parser-tester ${BOSS_LIBS})
+add_executable        (tester "${CMAKE_SOURCE_DIR}/src/tester.cpp" ${BOSS_SRC})
+target_link_libraries (tester ${BOSS_LIBS})
diff --git a/src/api.cpp b/src/api.cpp
index ff9a1262..b432d2ec 100644
--- a/src/api.cpp
+++ b/src/api.cpp
@@ -22,6 +22,93 @@
 */
 
 #include "api.h"
+#include "globals.h"
+#include "game.h"
+#include "metadata.h"
+#include "parsers.h"
+
+#include <yaml-cpp/yaml.h>
+
+#include <algorithm>
+#include <fstream>
+#include <clocale>
+#include <list>
+#include <vector>
+
+#include <boost/filesystem/detail/utf8_codecvt_facet.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/unordered_set.hpp>
+#include <boost/unordered_map.hpp>
+
+const unsigned int BOSS_API_OK                          = 0;
+const unsigned int BOSS_API_ERROR_LIBLO_ERROR           = 1;
+const unsigned int BOSS_API_ERROR_PARSE_FAIL            = 2;
+const unsigned int BOSS_API_ERROR_CONDITION_EVAL_FAIL   = 3;
+const unsigned int BOSS_API_ERROR_REGEX_EVAL_FAIL       = 4;
+const unsigned int BOSS_API_ERROR_NO_MEM                = 5;
+const unsigned int BOSS_API_ERROR_INVALID_ARGS          = 6;
+const unsigned int BOSS_API_ERROR_NO_TAG_MAP            = 7;
+const unsigned int BOSS_API_RETURN_MAX                  = BOSS_API_ERROR_NO_TAG_MAP;
+
+// The following are the games identifiers used by the API.
+const unsigned int BOSS_API_GAME_TES4                   = BOSS_GAME_TES4;
+const unsigned int BOSS_API_GAME_TES5                   = BOSS_GAME_TES5;
+const unsigned int BOSS_API_GAME_FO3                    = BOSS_GAME_FO3;
+const unsigned int BOSS_API_GAME_FONV                   = BOSS_GAME_FONV;
+
+// BOSS message types.
+const unsigned int BOSS_API_MESSAGE_SAY                 = 1;
+const unsigned int BOSS_API_MESSAGE_WARN                = 2;
+const unsigned int BOSS_API_MESSAGE_ERROR               = 3;
+
+struct _boss_db_int {
+    _boss_db_int()
+        : extTagMap(NULL),
+        extAddedTagIds(NULL),
+        extRemovedTagIds(NULL),
+        extMessageArray(NULL),
+        extMessageArraySize(0) {
+    }
+
+    ~_boss_db_int() {
+        delete [] extAddedTagIds;
+        delete [] extRemovedTagIds;
+
+        if (extTagMap != NULL) {
+            for (size_t i=0; i < bashTagMap.size(); i++)
+                delete [] extTagMap[i];  //Gotta clear those allocated strings.
+            delete [] extTagMap;
+        }
+
+        if (extMessageArray != NULL) {
+            for (size_t i=0; i < extMessageArraySize; i++)
+                delete [] extMessageArray[i].message;  //Gotta clear those allocated strings.
+            delete [] extMessageArray;
+        }
+    }
+
+    boss::Game game;
+    std::list<boss::Plugin> metadata;
+    std::list<boss::Plugin> userMetadata;
+
+    boost::unordered_map<std::string, unsigned int> bashTagMap;
+
+    char ** extTagMap;
+
+    unsigned int * extAddedTagIds;
+    unsigned int * extRemovedTagIds;
+
+    boss_message * extMessageArray;
+    size_t extMessageArraySize;
+};
+
+char * extMessageStr;
+
+// std::string to null-terminated char string converter.
+char * ToNewCString(std::string str) {
+    char * p = new char[str.length() + 1];
+    return strcpy(p, str.c_str());
+}
 
 //////////////////////////////
 // Error Handling Functions
@@ -30,8 +117,18 @@
 // Outputs a string giving the details of the last time an error or
 // warning return code was returned by a function. The string exists
 // until this function is called again or until CleanUpAPI is called.
-BOSS_API uint32_t boss_get_error_message (uint8_t ** message) {
+BOSS_API unsigned int boss_get_error_message (char ** message) {
+    if (message == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    *message = "Something went wrong.";
+
+    return BOSS_API_OK;
+}
+
+// Frees memory allocated to error string.
+BOSS_API void     boss_cleanup () {
+    delete[] extMessageStr;
 }
 
 
@@ -41,15 +138,22 @@ BOSS_API uint32_t boss_get_error_message (uint8_t ** message) {
 
 // Returns whether this version of BOSS supports the API from the given
 // BOSS version. Abstracts BOSS API stability policy away from clients.
-BOSS_API bool boss_is_compatible (const uint32_t versionMajor, const uint32_t versionMinor, const uint32_t versionPatch) {
-
+BOSS_API bool boss_is_compatible (const unsigned int versionMajor, const unsigned int versionMinor, const unsigned int versionPatch) {
+    return versionMajor == BOSS_VERSION_MAJOR && versionMinor == BOSS_VERSION_MINOR;
 }
 
 // Returns the version string for this version of BOSS.
 // The string exists until this function is called again or until
 // CleanUpAPI is called.
-BOSS_API uint32_t boss_get_version (uint32_t * versionMajor, uint32_t * versionMinor, uint32_t * versionPatch) {
+BOSS_API unsigned int boss_get_version (unsigned int * versionMajor, unsigned int * versionMinor, unsigned int * versionPatch) {
+    if (versionMajor == NULL || versionMinor == NULL || versionPatch == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    *versionMajor = BOSS_VERSION_MAJOR;
+    *versionMinor = BOSS_VERSION_MINOR;
+    *versionPatch = BOSS_VERSION_PATCH;
+
+    return BOSS_API_OK;
 }
 
 
@@ -64,18 +168,42 @@ BOSS_API uint32_t boss_get_version (uint32_t * versionMajor, uint32_t * versionM
 // plugins.txt and loadorder.txt (if they both exist) are in sync. If
 // dataPath == NULL then the API will attempt to detect the data path of
 // the specified game.
-BOSS_API uint32_t boss_create_db (boss_db * db, const uint32_t clientGame, const uint8_t * gamePath) {
+BOSS_API unsigned int boss_create_db (boss_db * db, const unsigned int clientGame, const char * gamePath) {
+    if (db == NULL || (clientGame != BOSS_API_GAME_TES4 && clientGame != BOSS_API_GAME_TES5 && clientGame != BOSS_API_GAME_FO3 && clientGame != BOSS_API_GAME_FONV))
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    //Set the locale to get encoding conversions working correctly.
+    std::setlocale(LC_CTYPE, "");
+    std::locale global_loc = std::locale();
+    std::locale loc(global_loc, new boost::filesystem::detail::utf8_codecvt_facet());
+    boost::filesystem::path::imbue(loc);
+
+    std::string game_path = "";
+    if (gamePath != NULL)
+        game_path = gamePath;
+
+    boss::Game game;
+    try {
+        game = boss::Game(clientGame, game_path);  //This also checks to see if the game is installed if game_path is empty and throws an exception if it is not detected.
+    } catch (std::runtime_error& e) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+
+    boss_db retVal;
+    try {
+        retVal = new _boss_db_int;
+    } catch (std::bad_alloc /*&e*/) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+    retVal->game = game;
+    *db = retVal;
+
+    return BOSS_API_OK;
 }
 
 // Destroys the given DB, freeing any memory allocated as part of its use.
 BOSS_API void     boss_destroy_db (boss_db db) {
-
-}
-
-// Frees memory allocated to version and error strings.
-BOSS_API void     boss_cleanup () {
-
+    delete db;
 }
 
 
@@ -87,9 +215,27 @@ BOSS_API void     boss_cleanup () {
 // Can be called multiple times. On error, the database is unchanged.
 // Paths are case-sensitive if the underlying filesystem is case-sensitive.
 // masterlistPath and userlistPath are files.
-BOSS_API uint32_t boss_load_lists (boss_db db, const uint8_t * masterlistPath,
-                                    const uint8_t * userlistPath) {
+BOSS_API unsigned int boss_load_lists (boss_db db, const char * masterlistPath,
+                                    const char * userlistPath) {
+    if (db == NULL || masterlistPath == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    std::list<boss::Plugin> temp;
+    std::list<boss::Plugin> userTemp;
+    try {
+        YAML::Node tempNode = YAML::LoadFile(masterlistPath);
+        temp = tempNode["plugins"].as< std::list<boss::Plugin> >();
+
+        tempNode = YAML::LoadFile(userlistPath);
+        userTemp = tempNode["plugins"].as< std::list<boss::Plugin> >();
+    } catch (YAML::Exception &e) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+
+    db->metadata = temp;
+    db->userMetadata = userTemp;
+
+    return BOSS_API_OK;
 }
 
 // Evaluates all conditional lines and regex mods the loaded masterlist.
@@ -98,8 +244,29 @@ BOSS_API uint32_t boss_load_lists (boss_db db, const uint8_t * masterlistPath,
 // is called. Repeated calls re-evaluate the masterlist from scratch each time,
 // ignoring the results of any previous evaluations. Paths are case-sensitive
 // if the underlying filesystem is case-sensitive.
-BOSS_API uint32_t boss_eval_lists (boss_db db) {
+BOSS_API unsigned int boss_eval_lists (boss_db db) {
 
+    std::list<boss::Plugin> temp = db->metadata;
+    try {
+        for (std::list<boss::Plugin>::iterator it=temp.begin(), endIt=temp.end(); it != endIt; ++it) {
+            it->EvalAllConditions(db->game);
+        }
+    } catch (std::runtime_error& e) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+    db->metadata = temp;
+
+    temp = db->userMetadata;
+    try {
+        for (std::list<boss::Plugin>::iterator it=temp.begin(), endIt=temp.end(); it != endIt; ++it) {
+            it->EvalAllConditions(db->game);
+        }
+    } catch (std::runtime_error& e) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+    db->userMetadata = temp;
+
+    return BOSS_API_OK;
 }
 
 
@@ -110,8 +277,62 @@ BOSS_API uint32_t boss_eval_lists (boss_db db) {
 // Returns an array of the Bash Tags encounterred when loading the masterlist
 // and userlist, and the number of tags in the returned array. The array and
 // its contents are static and should not be freed by the client.
-BOSS_API uint32_t boss_get_tag_map (boss_db db, boss_tag ** tagMap, size_t * numTags) {
+BOSS_API unsigned int boss_get_tag_map (boss_db db, char *** tagMap, size_t * numTags) {
+    if (db == NULL || tagMap == NULL || numTags == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    //Clear existing array allocation.
+    if (db->extTagMap != NULL) {
+        for (size_t i=0, max=db->bashTagMap.size(); i < max; ++i) {
+            delete [] db->extTagMap[i];
+        }
+        delete [] db->extTagMap;
+    }
+
+    //Initialise output.
+    *tagMap = NULL;
+    *numTags = 0;
+
+    boost::unordered_set<std::string> allTags;
+
+    for (std::list<boss::Plugin>::iterator it=db->metadata.begin(), endIt=db->metadata.end(); it != endIt; ++it) {
+        std::list<boss::Tag> tags = it->Tags();
+        for (std::list<boss::Tag>::const_iterator jt=tags.begin(), endJt=tags.end(); jt != endJt; ++jt) {
+            allTags.insert(jt->Name());
+        }
+    }
+    for (std::list<boss::Plugin>::iterator it=db->userMetadata.begin(), endIt=db->userMetadata.end(); it != endIt; ++it) {
+        std::list<boss::Tag> tags = it->Tags();
+        for (std::list<boss::Tag>::const_iterator jt=tags.begin(), endJt=tags.end(); jt != endJt; ++jt) {
+            allTags.insert(jt->Name());
+        }
+    }
+
+    if (allTags.empty())
+        return BOSS_API_OK;
+
+    try {
+        db->extTagMap = new char*[allTags.size()];
+    } catch (std::bad_alloc /*&e*/) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+
+    unsigned int UID = 0;
+    try {
+        for (boost::unordered_set<std::string>::const_iterator it=allTags.begin(), endIt=allTags.end(); it != endIt; ++it) {
+            db->bashTagMap.emplace(*it, UID);
+            //Also allocate memory.
+            db->extTagMap[UID] = ToNewCString(*it);
+            UID++;
+        }
+    } catch (std::bad_alloc /*&e*/) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+
+    *tagMap = db->extTagMap;
+    *numTags = allTags.size();
+
+    return BOSS_API_OK;
 }
 
 // Returns arrays of Bash Tag UIDs for Bash Tags suggested for addition and removal
@@ -121,28 +342,143 @@ BOSS_API uint32_t boss_get_tag_map (boss_db db, boss_tag ** tagMap, size_t * num
 // case-insensitive. If no Tags are found for an array, the array pointer (*tagIds)
 // will be NULL. The userlistModified bool is true if the userlist contains Bash Tag
 // suggestion message additions.
-BOSS_API uint32_t boss_get_plugin_tags (boss_db db, const uint8_t * plugin,
-                                    uint32_t ** tagIds_added,
-                                    size_t * numTags_added,
-                                    uint32_t **tagIds_removed,
-                                    size_t *numTags_removed,
-                                    bool * userlistModified) {
+BOSS_API unsigned int boss_get_plugin_tags (boss_db db, const char * plugin,
+                                            unsigned int ** tagIds_added,
+                                            size_t * numTags_added,
+                                            unsigned int **tagIds_removed,
+                                            size_t * numTags_removed,
+                                            bool * userlistModified) {
+    if (db == NULL || plugin == NULL || tagIds_added == NULL || numTags_added == NULL || tagIds_removed == NULL || numTags_removed == NULL || userlistModified == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+
+    //Clear existing array allocations.
+    delete [] db->extAddedTagIds;
+    delete [] db->extRemovedTagIds;
+
+    //Initialise output.
+    *tagIds_added = NULL;
+    *tagIds_removed = NULL;
+    *userlistModified = false;
+    *numTags_added = 0;
+    *numTags_removed = 0;
+
+    boost::unordered_set<std::string> tagsAdded, tagsRemoved;
+    std::list<boss::Plugin>::iterator it = std::find(db->metadata.begin(), db->metadata.end(), boss::Plugin(plugin));
+    if (it != db->metadata.end()) {
+        std::list<boss::Tag> tags = it->Tags();
+        for (std::list<boss::Tag>::const_iterator it=tags.begin(), endIt=tags.end(); it != endIt; ++it) {
+            if (it->IsAddition())
+                tagsAdded.insert(it->Name());
+            else
+                tagsRemoved.insert(it->Name());
+        }
+    }
+
+    it = std::find(db->userMetadata.begin(), db->userMetadata.end(), boss::Plugin(plugin));
+    if (it != db->userMetadata.end()) {
+        *userlistModified = true;
+    }
+
+    std::vector<unsigned int> tagsAddedIDs, tagsRemovedIDs;
+    for (boost::unordered_set<std::string>::const_iterator it=tagsAdded.begin(), endIt=tagsAdded.end(); it != endIt; ++it) {
+        boost::unordered_map<std::string, unsigned int>::const_iterator mapIter = db->bashTagMap.find(*it);
+        if (mapIter != db->bashTagMap.end())
+            tagsAddedIDs.push_back(mapIter->second);
+    }
+    for (boost::unordered_set<std::string>::const_iterator it=tagsRemoved.begin(), endIt=tagsRemoved.end(); it != endIt; ++it) {
+        boost::unordered_map<std::string, unsigned int>::const_iterator mapIter = db->bashTagMap.find(*it);
+        if (mapIter != db->bashTagMap.end())
+            tagsRemovedIDs.push_back(mapIter->second);
+    }
+
+    //Allocate memory.
+    size_t numAdded = tagsAddedIDs.size();
+    size_t numRemoved = tagsRemovedIDs.size();
+    try {
+        if (numAdded != 0) {
+            db->extAddedTagIds = new uint32_t[numAdded];
+            for (size_t i=0; i < numAdded; i++)
+                db->extAddedTagIds[i] = tagsAddedIDs[i];
+        }
+        if (numRemoved != 0) {
+            db->extRemovedTagIds = new uint32_t[numRemoved];
+            for (size_t i=0; i < numRemoved; i++)
+                db->extRemovedTagIds[i] = tagsRemovedIDs[i];
+        }
+    } catch (std::bad_alloc /*&e*/) {
+        return BOSS_API_ERROR_INVALID_ARGS;
+    }
+
+    //Set outputs.
+    *tagIds_added = db->extAddedTagIds;
+    *tagIds_removed = db->extRemovedTagIds;
+    *numTags_added = numAdded;
+    *numTags_removed = numRemoved;
+
+    return BOSS_API_OK;
 }
 
 // Returns the messages attached to the given plugin. Messages are valid until Load,
 // DestroyBossDb or GetPluginMessages are next called. plugin is case-insensitive.
 // If no messages are attached, *messages will be NULL and numMessages will equal 0.
-BOSS_API uint32_t boss_get_plugin_messages (boss_db db, const uint8_t * plugin,
-                                            boss_message ** messages,
-                                            size_t * numMessages) {
+BOSS_API unsigned int boss_get_plugin_messages (boss_db db, const char * plugin,
+                                                boss_message ** messages,
+                                                size_t * numMessages) {
+    if (db == NULL || plugin == NULL || messages == NULL || numMessages == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    //Clear existing array allocation.
+    if (db->extMessageArray != NULL) {
+        for (size_t i=0; i < db->extMessageArraySize; ++i) {
+            delete [] db->extMessageArray[i].message;
+        }
+        delete [] db->extMessageArray;
+    }
+
+    //Initialise output.
+    *messages = NULL;
+    *numMessages = 0;
+
+    std::list<boss::Plugin>::iterator it = std::find(db->metadata.begin(), db->metadata.end(), boss::Plugin(plugin));
+    if (it == db->metadata.end()) {
+        it = std::find(db->userMetadata.begin(), db->userMetadata.end(), boss::Plugin(plugin));
+        if (it == db->userMetadata.end())
+            return BOSS_API_OK;
+    }
+
+    return BOSS_API_OK;
 }
 
 // Writes a minimal masterlist that only contains mods that have Bash Tag suggestions,
 // and/or dirty messages, plus the Tag suggestions and/or messages themselves and their
 // conditions, in order to create the Wrye Bash taglist. outputFile is the path to use
 // for output. If outputFile already exists, it will only be overwritten if overwrite is true.
-BOSS_API uint32_t boss_write_minimal_list (boss_db db, const uint8_t * outputFile, const bool overwrite) {
+BOSS_API unsigned int boss_write_minimal_list (boss_db db, const char * outputFile, const bool overwrite) {
+    if (db == NULL || outputFile == NULL)
+        return BOSS_API_ERROR_INVALID_ARGS;
 
+    if (boost::filesystem::exists(outputFile) && !overwrite)
+        return BOSS_API_ERROR_INVALID_ARGS;
+
+    std::list<boss::Plugin> temp = db->metadata;
+    for (std::list<boss::Plugin>::iterator it=temp.begin(), endIt=temp.end(); it != endIt; ++it) {
+        boss::Plugin p(it->Name());
+        p.Tags(it->Tags());
+        *it = p;
+    }
+
+    YAML::Emitter yout;
+    yout.SetIndent(2);
+    yout << YAML::BeginMap
+         << YAML::Key << "plugins" << YAML::Value << temp
+         << YAML::EndMap;
+
+    std::ofstream out(outputFile);
+    if (out.fail())
+        return BOSS_API_ERROR_INVALID_ARGS;
+    out << yout.c_str();
+    out.close();
+
+    return BOSS_API_OK;
 }
diff --git a/src/api.h b/src/api.h
index 5694b230..d0200b13 100644
--- a/src/api.h
+++ b/src/api.h
@@ -68,67 +68,40 @@ extern "C"
 // All API strings are uint8_t* strings encoded in UTF-8. Strings returned
 // by the API should not have their memory freed by the client: the API will
 // clean up after itself.
-// All API numbers and error codes are uint32_t integers.
+// All API numbers and error codes are unsigned int integers.
 
 // Abstracts the definition of BOSS's internal state while still providing
 // type safety across the API.
 typedef struct _boss_db_int * boss_db;
 
-// boss_tag structure gives the Unique ID number (UID) for each Bash Tag and
-// the corresponding Tag name string.
-typedef struct {
-    uint32_t id;
-    const uint8_t * name;  // don't use char for utf-8 since char can be signed
-} boss_tag;
-
 // boss_message structure gives the type of message and it contents.
 typedef struct {
-    uint32_t type;
-    const uint8_t * message;
+    unsigned int type;
+    const char * message;
 } boss_message;
 
 
 // The following are the possible codes that the API can return.
-BOSS_API extern const uint32_t BOSS_API_OK;
-BOSS_API extern const uint32_t BOSS_API_OK_NO_UPDATE_NECESSARY;
-BOSS_API extern const uint32_t BOSS_API_WARN_BAD_FILENAME;
-BOSS_API extern const uint32_t BOSS_API_WARN_LO_MISMATCH;
-BOSS_API extern const uint32_t BOSS_API_ERROR_FILE_WRITE_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_FILE_DELETE_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_FILE_NOT_UTF8;
-BOSS_API extern const uint32_t BOSS_API_ERROR_FILE_NOT_FOUND;
-BOSS_API extern const uint32_t BOSS_API_ERROR_FILE_RENAME_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_TIMESTAMP_READ_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_TIMESTAMP_WRITE_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_PARSE_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_CONDITION_EVAL_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_REGEX_EVAL_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_NO_MEM;
-BOSS_API extern const uint32_t BOSS_API_ERROR_INVALID_ARGS;
-BOSS_API extern const uint32_t BOSS_API_ERROR_NETWORK_FAIL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_NO_INTERNET_CONNECTION;
-BOSS_API extern const uint32_t BOSS_API_ERROR_NO_TAG_MAP;
-BOSS_API extern const uint32_t BOSS_API_ERROR_PLUGINS_FULL;
-BOSS_API extern const uint32_t BOSS_API_ERROR_GAME_NOT_FOUND;
-BOSS_API extern const uint32_t BOSS_API_ERROR_PLUGIN_BEFORE_MASTER;
-BOSS_API extern const uint32_t BOSS_API_RETURN_MAX;
+BOSS_API extern const unsigned int BOSS_API_OK;
+BOSS_API extern const unsigned int BOSS_API_ERROR_LIBLO_ERROR;
+BOSS_API extern const unsigned int BOSS_API_ERROR_PARSE_FAIL;
+BOSS_API extern const unsigned int BOSS_API_ERROR_CONDITION_EVAL_FAIL;
+BOSS_API extern const unsigned int BOSS_API_ERROR_REGEX_EVAL_FAIL;
+BOSS_API extern const unsigned int BOSS_API_ERROR_NO_MEM;
+BOSS_API extern const unsigned int BOSS_API_ERROR_INVALID_ARGS;
+BOSS_API extern const unsigned int BOSS_API_ERROR_NO_TAG_MAP;
+BOSS_API extern const unsigned int BOSS_API_RETURN_MAX;
 
 // The following are the games identifiers used by the API.
-BOSS_API extern const uint32_t BOSS_API_GAME_OBLIVION;
-BOSS_API extern const uint32_t BOSS_API_GAME_FALLOUT3;
-BOSS_API extern const uint32_t BOSS_API_GAME_FALLOUTNV;
-BOSS_API extern const uint32_t BOSS_API_GAME_NEHRIM;
-BOSS_API extern const uint32_t BOSS_API_GAME_SKYRIM;
-BOSS_API extern const uint32_t BOSS_API_GAME_MORROWIND;
+BOSS_API extern const unsigned int BOSS_API_GAME_TES4;
+BOSS_API extern const unsigned int BOSS_API_GAME_TES5;
+BOSS_API extern const unsigned int BOSS_API_GAME_FO3;
+BOSS_API extern const unsigned int BOSS_API_GAME_FONV;
 
 // BOSS message types.
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_SAY;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_TAG;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_REQUIREMENT;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_INCOMPATIBILITY;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_DIRTY;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_WARN;
-BOSS_API extern const uint32_t BOSS_API_MESSAGE_ERROR;
+BOSS_API extern const unsigned int BOSS_API_MESSAGE_SAY;
+BOSS_API extern const unsigned int BOSS_API_MESSAGE_WARN;
+BOSS_API extern const unsigned int BOSS_API_MESSAGE_ERROR;
 
 
 
@@ -138,8 +111,11 @@ BOSS_API extern const uint32_t BOSS_API_MESSAGE_ERROR;
 
 // Outputs a string giving the details of the last time an error or
 // warning return code was returned by a function. The string exists
-// until this function is called again or until CleanUpAPI is called.
-BOSS_API uint32_t boss_get_error_message (uint8_t ** message);
+// until this function is called again or until boss_cleanup is called.
+BOSS_API unsigned int boss_get_error_message (char ** message);
+
+// Frees memory allocated to error string.
+BOSS_API void     boss_cleanup ();
 
 
 //////////////////////////////
@@ -148,12 +124,12 @@ BOSS_API uint32_t boss_get_error_message (uint8_t ** message);
 
 // Returns whether this version of BOSS supports the API from the given
 // BOSS version. Abstracts BOSS API stability policy away from clients.
-BOSS_API bool boss_is_compatible (const uint32_t versionMajor, const uint32_t versionMinor, const uint32_t versionPatch);
+BOSS_API bool boss_is_compatible (const unsigned int versionMajor, const unsigned int versionMinor, const unsigned int versionPatch);
 
 // Returns the version string for this version of BOSS.
 // The string exists until this function is called again or until
 // CleanUpAPI is called.
-BOSS_API uint32_t boss_get_version (uint32_t * versionMajor, uint32_t * versionMinor, uint32_t * versionPatch);
+BOSS_API unsigned int boss_get_version (unsigned int * versionMajor, unsigned int * versionMinor, unsigned int * versionPatch);
 
 
 ////////////////////////////////////
@@ -167,14 +143,11 @@ BOSS_API uint32_t boss_get_version (uint32_t * versionMajor, uint32_t * versionM
 // plugins.txt and loadorder.txt (if they both exist) are in sync. If
 // dataPath == NULL then the API will attempt to detect the data path of
 // the specified game.
-BOSS_API uint32_t boss_create_db (boss_db * db, const uint32_t clientGame, const uint8_t * gamePath);
+BOSS_API unsigned int boss_create_db (boss_db * db, const unsigned int clientGame, const char * gamePath);
 
 // Destroys the given DB, freeing any memory allocated as part of its use.
 BOSS_API void     boss_destroy_db (boss_db db);
 
-// Frees memory allocated to version and error strings.
-BOSS_API void     boss_cleanup ();
-
 
 ///////////////////////////////////
 // Database Loading Functions
@@ -184,8 +157,8 @@ BOSS_API void     boss_cleanup ();
 // Can be called multiple times. On error, the database is unchanged.
 // Paths are case-sensitive if the underlying filesystem is case-sensitive.
 // masterlistPath and userlistPath are files.
-BOSS_API uint32_t boss_load_lists (boss_db db, const uint8_t * masterlistPath,
-                                    const uint8_t * userlistPath);
+BOSS_API unsigned int boss_load_lists (boss_db db, const char * masterlistPath,
+                                    const char * userlistPath);
 
 // Evaluates all conditional lines and regex mods the loaded masterlist.
 // This exists so that Load() doesn't need to be called whenever the mods
@@ -193,7 +166,7 @@ BOSS_API uint32_t boss_load_lists (boss_db db, const uint8_t * masterlistPath,
 // is called. Repeated calls re-evaluate the masterlist from scratch each time,
 // ignoring the results of any previous evaluations. Paths are case-sensitive
 // if the underlying filesystem is case-sensitive.
-BOSS_API uint32_t boss_eval_lists (boss_db db);
+BOSS_API unsigned int boss_eval_lists (boss_db db);
 
 
 //////////////////////////
@@ -203,7 +176,8 @@ BOSS_API uint32_t boss_eval_lists (boss_db db);
 // Returns an array of the Bash Tags encounterred when loading the masterlist
 // and userlist, and the number of tags in the returned array. The array and
 // its contents are static and should not be freed by the client.
-BOSS_API uint32_t boss_get_tag_map (boss_db db, boss_tag ** tagMap, size_t * numTags);
+// The indices of the tagMap are each tag's UID.
+BOSS_API unsigned int boss_get_tag_map (boss_db db, char *** tagMap, size_t * numTags);
 
 // Returns arrays of Bash Tag UIDs for Bash Tags suggested for addition and removal
 // by BOSS's masterlist and userlist, and the number of tags in each array.
@@ -212,17 +186,17 @@ BOSS_API uint32_t boss_get_tag_map (boss_db db, boss_tag ** tagMap, size_t * num
 // case-insensitive. If no Tags are found for an array, the array pointer (*tagIds)
 // will be NULL. The userlistModified bool is true if the userlist contains Bash Tag
 // suggestion message additions.
-BOSS_API uint32_t boss_get_plugin_tags (boss_db db, const uint8_t * plugin,
-                                    uint32_t ** tagIds_added,
+BOSS_API unsigned int boss_get_plugin_tags (boss_db db, const char * plugin,
+                                    unsigned int ** tagIds_added,
                                     size_t * numTags_added,
-                                    uint32_t **tagIds_removed,
+                                    unsigned int **tagIds_removed,
                                     size_t *numTags_removed,
                                     bool * userlistModified);
 
 // Returns the messages attached to the given plugin. Messages are valid until Load,
 // DestroyBossDb or GetPluginMessages are next called. plugin is case-insensitive.
 // If no messages are attached, *messages will be NULL and numMessages will equal 0.
-BOSS_API uint32_t boss_get_plugin_messages (boss_db db, const uint8_t * plugin,
+BOSS_API unsigned int boss_get_plugin_messages (boss_db db, const char * plugin,
                                             boss_message ** messages,
                                             size_t * numMessages);
 
@@ -230,7 +204,7 @@ BOSS_API uint32_t boss_get_plugin_messages (boss_db db, const uint8_t * plugin,
 // and/or dirty messages, plus the Tag suggestions and/or messages themselves and their
 // conditions, in order to create the Wrye Bash taglist. outputFile is the path to use
 // for output. If outputFile already exists, it will only be overwritten if overwrite is true.
-BOSS_API uint32_t boss_write_minimal_list (boss_db db, const uint8_t * outputFile, const bool overwrite);
+BOSS_API unsigned int boss_write_minimal_list (boss_db db, const char * outputFile, const bool overwrite);
 
 
 #ifdef __cplusplus
diff --git a/src/game.cpp b/src/game.cpp
index 299257ad..2be06c1d 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -25,6 +25,8 @@
 #include "globals.h"
 #include "helpers.h"
 
+#include <libloadorder.h>
+
 #include <stdexcept>
 
 #include <boost/algorithm/string.hpp>
@@ -43,7 +45,7 @@ namespace boss {
     Game::Game()
         : id(BOSS_GAME_AUTODETECT) {}
 
-    Game::Game(const uint32_t gameCode, const string path, const bool noPathInit)
+    Game::Game(const unsigned int gameCode, const string path, const bool noPathInit)
         : id(gameCode) {
         if (Id() == BOSS_GAME_TES4) {
             name = "TES IV: Oblivion";
@@ -91,6 +93,31 @@ namespace boss {
                     throw runtime_error("Game path could not be detected.");
             } else
                 gamePath = fs::path(path);
+
+            lo_game_handle gh;
+            int ret;
+            char ** pluginArr;
+            size_t pluginArrSize;
+            if (id == BOSS_GAME_TES4)
+                ret = lo_create_handle(&gh, LIBLO_GAME_TES4, gamePath.string().c_str());
+            else if (id == BOSS_GAME_TES5)
+                ret = lo_create_handle(&gh, LIBLO_GAME_TES5, gamePath.string().c_str());
+            else if (id == BOSS_GAME_FO3)
+                ret = lo_create_handle(&gh, LIBLO_GAME_FO3, gamePath.string().c_str());
+            else if (id == BOSS_GAME_FONV)
+                ret = lo_create_handle(&gh, LIBLO_GAME_FNV, gamePath.string().c_str());
+
+            if (ret != LIBLO_OK)
+                throw runtime_error("Active plugin list lookup failed.");
+            else {
+                if (lo_get_active_plugins(gh, &pluginArr, &pluginArrSize) != LIBLO_OK)
+                    throw runtime_error("Active plugin list lookup failed.");
+                else {
+                    for (size_t i=0; i < pluginArrSize; ++i) {
+                        activePlugins.insert(string(pluginArr[i]));
+                    }
+                }
+            }
         }
     }
 
@@ -102,7 +129,7 @@ namespace boss {
         return fs::exists(fs::path("..") / pluginsFolderName);
     }
 
-    uint32_t Game::Id() const {
+    unsigned int Game::Id() const {
         return id;
     }
 
@@ -119,11 +146,6 @@ namespace boss {
     }
 
     bool Game::IsActive(const std::string& plugin) const {
-        if (activePlugins.empty()) {
-            //Use libloadorder to fetch the active plugins list. Fill the set
-            //with the lowercased filenames.
-        }
-
         return activePlugins.find(boost::to_lower_copy(plugin)) != activePlugins.end();
     }
 
diff --git a/src/game.h b/src/game.h
index ac9e9419..7d1eb503 100644
--- a/src/game.h
+++ b/src/game.h
@@ -36,12 +36,12 @@ namespace boss {
     class Game {
     public:
         Game();  //Sets game to BOSS_GAME_AUTODETECT, with all other vars being empty.
-        Game(const uint32_t gameCode, const std::string path = "", const bool noPathInit = false); //Empty path means constructor will detect its location. If noPathInit is true, then the game's BOSS subfolder will not be created.
+        Game(const unsigned int gameCode, const std::string path = "", const bool noPathInit = false); //Empty path means constructor will detect its location. If noPathInit is true, then the game's BOSS subfolder will not be created.
 
         bool IsInstalled() const;
         bool IsInstalledLocally() const;
 
-        uint32_t Id() const;
+        unsigned int Id() const;
         std::string Name() const;  //Returns the game's name, eg. "TES IV: Oblivion".
 
         boost::filesystem::path GamePath() const;
@@ -56,7 +56,7 @@ namespace boss {
         boost::unordered_map<std::string, bool> conditionCache;  //Holds lowercased strings.
         boost::unordered_map<std::string, uint32_t> crcCache;  //Holds lowercased strings.
     private:
-        uint32_t id;
+        unsigned id;
         std::string name;
 
         std::string registryKey;
diff --git a/src/globals.h b/src/globals.h
index e33a5ab0..e04fa717 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -23,14 +23,14 @@
 #ifndef __BOSS_GLOBALS__
 #define __BOSS_GLOBALS__
 
-const int BOSS_GAME_AUTODETECT  = 0;
-const int BOSS_GAME_TES4        = 1;
-const int BOSS_GAME_TES5        = 2;
-const int BOSS_GAME_FO3         = 3;
-const int BOSS_GAME_FONV        = 4;
+const unsigned int BOSS_GAME_AUTODETECT  = 0;
+const unsigned int BOSS_GAME_TES4        = 1;
+const unsigned int BOSS_GAME_TES5        = 2;
+const unsigned int BOSS_GAME_FO3         = 3;
+const unsigned int BOSS_GAME_FONV        = 4;
 
-const int BOSS_VERSION_MAJOR = 3;
-const int BOSS_VERSION_MINOR = 0;
-const int BOSS_VERSION_PATCH = 0;
+const unsigned int BOSS_VERSION_MAJOR = 3;
+const unsigned int BOSS_VERSION_MINOR = 0;
+const unsigned int BOSS_VERSION_PATCH = 0;
 
 #endif
diff --git a/src/legacy.py b/src/legacy.py
index f8f15958..824e15b2 100755
--- a/src/legacy.py
+++ b/src/legacy.py
@@ -23,13 +23,10 @@
 
 # This is a script that converts a MF 2.3 masterlist to a MF 3 masterlist. It's
 # a bit hacky, but the YAML parser accepts it. Limitations are:
-#   - Doesn't lowercase condition statements.
 #   - Doesn't strip plugins that no longer belong in the masterlist, ie. without
 #     messages or positioning comments.
 #   - Requirements and incompatibilities do not use their new data structures,
 #     and are just converted to 'say' messages.
-#   - All strings except tags are enclosed in double quotes and escaped, even
-#     those that don't need to be, and those that are already escaped.
 #   - No extraneous comments/messages are removed.
 #   - VAR conditions are not replaced with their conditional statements. SET lines
 #     are stripped, so the old masterlist must be used to check what they are.
@@ -38,15 +35,46 @@
 #   - Conditional plugin positions are all made unconditional, so there will be
 #     duplicate entries.
 
+import re
+
 def escapeYAMLStr(s):
-    return '"' + s.replace('"', '\\"').replace('\\', '\\\\').strip(' ') + '"'
+    special = ['-', '?', ':', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`']
+    if ('\'' in s):
+        return '"' + s.replace('\\', '\\\\').replace('"', '\\"').strip() + '"'
+    elif (1 in [c in s for c in special]):
+        return '\'' + s.strip() + '\''
+    else:
+        return s;
 
 def mContent(line):
     content = line[line.find(':')+1:]
     return escapeYAMLStr(content)
 
-inFile = open('masterlist.txt', 'r')
-outFile = open('masterlist.yaml', 'w')
+def convertCondition(condition):
+    #IF no longer exists.
+    #IFNOT is now 'not'.
+    #The VAR condition no longer exists.
+    #The '=' comparator is now '=='.
+    #The LANG condition no longer exists.
+    #'&&' is now 'and'.
+    #'||' is now 'or'.
+
+    #Really, these will probably have to be done manually.
+
+    parts = condition.split('"')  # Every odd index is quoted and shouldn't be lowercased.
+
+    for i in range(len(parts)):
+        if (i % 2 == 0):
+            parts[i] = parts[i].lower()
+
+    condition = '"'.join(parts)
+
+    condition.replace(' && ', ' and ').replace(' || ', ' or ').replace(' =)', ' ==)')
+
+    return escapeYAMLStr(condition)
+
+inFile = open('../../BOSS/data/boss-oblivion/masterlist.txt', 'r')
+outFile = open('../build/masterlist.yaml', 'w')
 
 outFile.write('---\n');
 
@@ -57,7 +85,7 @@ for line in inFile:
 
     line = line.replace('\n', '')
 
-    if (len(line) == 0):
+    if (len(line.strip()) == 0):
         continue
 
     # Skip group lines.
@@ -102,14 +130,15 @@ for line in inFile:
     if ('IF' in line and ':' in line):
         key = line[:line.find(':')]
         key = key.replace('GLOBAL', '')
-        condition = key[:key.rfind(' ')].strip(' ')
-        condition = condition.replace('&&', 'and').replace('||', 'or')
+        condition = key[:key.rfind(' ')].strip()
     elif ('ELSE' in line and ':' in line):
-        condition = condition.replace('IF ', 'IFNOT2 ')
-        condition = condition.replace('IFNOT ', 'IF ')
-        condition = condition.replace('IFNOT2 ', 'IFNOT ')
+        if (condition[0] != 'n'):
+            condition = 'not ' + condition
+        condition = condition.replace('not ', '`~||~`')
+        condition = condition.replace('d f', 'd not f').replace('d c', 'd not c', ', 'and
     else:
         condition = ''
+    condition = convertCondition(condition);
 
     # Write tag lines.
     if ('TAG:' in line):
@@ -141,10 +170,17 @@ for line in inFile:
             indent = '      '
         else:
             indent = '  '
+        prefix = ''
+        if ('INC:' in line):
+            line = 'Incompatible with ' + line.split(':')[1]
+        elif ('REQ:' in line):
+            line = 'Requires ' + line.split(':')[1]
+        else:
+            line = line.split(':')[1]
         outFile.write(indent + '- type: say\n')
         if (condition):
             outFile.write(indent + '  condition: ' + condition + '\n')
-        outFile.write(indent + '  content: ' + mContent(line) + '\n')
+        outFile.write(indent + '  content: ' + escapeYAMLStr(line) + '\n')
 
     # Write 'warn' messages.
     if ('DIRTY:' in line or 'WARN:' in line):
diff --git a/src/metadata.cpp b/src/metadata.cpp
index 711fe1d7..231db81e 100644
--- a/src/metadata.cpp
+++ b/src/metadata.cpp
@@ -233,4 +233,8 @@ namespace boss {
     bool Plugin::IsRegexPlugin() const {
         return boost::iends_with(name, "\\.esm") || boost::iends_with(name, "\\.esp");
     }
+
+    bool Plugin::operator == (Plugin rhs) {
+        return name == rhs.Name();
+    }
 }
diff --git a/src/metadata.h b/src/metadata.h
index 8a17549e..cff6291d 100644
--- a/src/metadata.h
+++ b/src/metadata.h
@@ -129,6 +129,8 @@ namespace boss {
         void EvalAllConditions(boss::Game& game);
         bool HasNameOnly() const;
         bool IsRegexPlugin() const;
+
+        bool operator == (Plugin rhs);
     private:
         std::string name;
         bool enabled;  //Default to true.
@@ -145,6 +147,8 @@ namespace boss {
             return lhs.Name() < rhs.Name();
         }
     };
+
+
 }
 
 #endif
diff --git a/src/parsers.h b/src/parsers.h
index 45ff40df..328bd49f 100644
--- a/src/parsers.h
+++ b/src/parsers.h
@@ -34,6 +34,8 @@
 #include <stdexcept>
 #include <stdint.h>
 
+#include <yaml-cpp/yaml.h>
+
 #include <boost/regex.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/algorithm/string.hpp>
diff --git a/src/tester.cpp b/src/tester.cpp
index ea233f6f..e38b3349 100644
--- a/src/tester.cpp
+++ b/src/tester.cpp
@@ -27,21 +27,8 @@ int main() {
 
     YAML::Node test = YAML::LoadFile("masterlist-example.yaml");
 
-    list<boss::Message> globalMessages;
-    if (test["globals"]) {
-        YAML::Node globals = test["globals"];
-        for (YAML::const_iterator it=globals.begin(); it != globals.end(); ++it) {
-            globalMessages.push_back(it->as<boss::Message>());
-        }
-    }
-
-    list<boss::Plugin> pluginData;
-    if (test["plugins"]) {
-        YAML::Node plugins = test["plugins"];
-        for (YAML::const_iterator it=plugins.begin(); it != plugins.end(); ++it) {
-            pluginData.push_back(it->as<boss::Plugin>());
-        }
-    }
+    list<boss::Message> globalMessages = test["globals"].as< list<boss::Message> >();
+    list<boss::Plugin> pluginData = test["plugins"].as< list<boss::Plugin> >();
 
     cout << "Testing masterlist generator." << endl;