diff --git a/scripts/archive.js b/scripts/archive.js
index 49e0a946..95629151 100644
--- a/scripts/archive.js
+++ b/scripts/archive.js
@@ -6,6 +6,11 @@
 var child_process =  require('child_process');
 var path = require('path');
 var fs = require('fs-extra');
+var helpers = require('./helpers');
+
+function isApi64Bit(root_path) {
+    return helpers.fileExists(path.join(root_path, 'build', 'Release', 'loot64.dll'));
+}
 
 function vulcanize() {
     return child_process.execFileSync('node', [
@@ -42,6 +47,12 @@ function createAppArchive(dest_path) {
     // Ensure that the output directory is empty.
     fs.emptyDirSync(temp_path);
 
+    if (helpers.isMultiArch(root_path)) {
+        var release_path = path.join(root_path, 'build', '32', 'Release');
+    } else {
+        var release_path = path.join(root_path, 'build', 'Release');
+    }
+
     // Copy LOOT exectuable and CEF files.
     [
         'LOOT.exe',
@@ -59,7 +70,7 @@ function createAppArchive(dest_path) {
         'icudtl.dat'
     ].forEach(function(file){
         fs.copySync(
-            path.join(root_path, 'build', 'Release', file),
+            path.join(release_path, file),
             path.join(temp_path, file)
         );
     });
@@ -67,7 +78,7 @@ function createAppArchive(dest_path) {
     // CEF locale file.
     fs.mkdirsSync(path.join(temp_path, 'resources', 'l10n'));
     fs.copySync(
-        path.join(root_path, 'build', 'Release', 'resources', 'l10n', 'en-US.pak'),
+        path.join(release_path, 'resources', 'l10n', 'en-US.pak'),
         path.join(temp_path, 'resources', 'l10n', 'en-US.pak')
     );
 
@@ -86,7 +97,7 @@ function createAppArchive(dest_path) {
     // UI files.
     fs.mkdirsSync(path.join(temp_path, 'resources', 'ui', 'css'));
     fs.copySync(
-        path.join(root_path, 'build', 'Release', 'resources', 'ui', 'index.html'),
+        path.join(release_path, 'resources', 'ui', 'index.html'),
         path.join(temp_path, 'resources', 'ui', 'index.html')
     );
     fs.copySync(
@@ -123,11 +134,27 @@ function createApiArchive(dest_path) {
     // Ensure that the output directory is empty.
     fs.emptyDirSync(temp_path);
 
-    // API binary.
-    fs.copySync(
-        path.join(root_path, 'build', 'Release', 'loot32.dll'),
-        path.join(temp_path, 'loot32.dll')
-    );
+    // API binary/binaries.
+    if (helpers.isMultiArch(root_path)) {
+        fs.copySync(
+            path.join(root_path, 'build', '32', 'Release', 'loot32.dll'),
+            path.join(temp_path, 'loot32.dll')
+        );
+        fs.copySync(
+            path.join(root_path, 'build', '64', 'Release', 'loot64.dll'),
+            path.join(temp_path, 'loot64.dll')
+        );
+    } else if (isApi64Bit(root_path)) {
+        fs.copySync(
+            path.join(root_path, 'build', 'Release', 'loot64.dll'),
+            path.join(temp_path, 'loot64.dll')
+        );
+    } else {
+        fs.copySync(
+            path.join(root_path, 'build', 'Release', 'loot32.dll'),
+            path.join(temp_path, 'loot32.dll')
+        );
+    }
 
     // API header file.
     fs.mkdirsSync(path.join(temp_path, 'include', 'loot'));
diff --git a/scripts/helpers.js b/scripts/helpers.js
new file mode 100644
index 00000000..af1fe996
--- /dev/null
+++ b/scripts/helpers.js
@@ -0,0 +1,24 @@
+// Helper functions shared across scripts.
+var path = require('path');
+var fs = require('fs');
+
+function fileExists(file_path) {
+    try {
+        // Query the entry
+        stats = fs.lstatSync(file_path);
+
+        // Is it a directory?
+        if (stats.isFile()) {
+            return true;
+        }
+    } catch (e) {}
+
+    return false;
+}
+
+function isMultiArch(root_path) {
+    return fileExists(path.join(root_path, 'build', '64', 'Release', 'loot64.dll'));
+}
+
+module.exports.fileExists = fileExists;
+module.exports.isMultiArch = isMultiArch;
diff --git a/scripts/installer.iss b/scripts/installer.iss
index d6011047..7ea57df4 100644
--- a/scripts/installer.iss
+++ b/scripts/installer.iss
@@ -16,6 +16,12 @@
 #define SimplifiedChineseExists
 #endif
 
+#if FileExists(SourcePath + '..\build\32\Release\LOOT.exe')
+#define buildir "build\32"
+#else
+#define buildir "build"
+#endif
+
 [Setup]
 ; NOTE: The value of AppId uniquely identifies this application.
 ; Do not use the same AppId value in installers for other applications.
@@ -61,33 +67,33 @@ Name: "es"; MessagesFile: "compiler:Languages\Spanish.isl"
 Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
 
 [Files]
-Source: "build\Release\LOOT.exe"; \
+Source: "{#buildir}\Release\LOOT.exe"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\cef.pak"; \
+Source: "{#buildir}\Release\cef.pak"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\cef_100_percent.pak"; \
+Source: "{#buildir}\Release\cef_100_percent.pak"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\cef_200_percent.pak"; \
+Source: "{#buildir}\Release\cef_200_percent.pak"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\d3dcompiler_47.dll"; \
+Source: "{#buildir}\Release\d3dcompiler_47.dll"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\devtools_resources.pak"; \
+Source: "{#buildir}\Release\devtools_resources.pak"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\icudtl.dat"; \
+Source: "{#buildir}\Release\icudtl.dat"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\libcef.dll"; \
+Source: "{#buildir}\Release\libcef.dll"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\libEGL.dll"; \
+Source: "{#buildir}\Release\libEGL.dll"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\libGLESv2.dll"; \
+Source: "{#buildir}\Release\libGLESv2.dll"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\wow_helper.exe"; \
+Source: "{#buildir}\Release\wow_helper.exe"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\natives_blob.bin"; \
+Source: "{#buildir}\Release\natives_blob.bin"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\snapshot_blob.bin"; \
+Source: "{#buildir}\Release\snapshot_blob.bin"; \
 DestDir: "{app}"; Flags: ignoreversion
-Source: "build\Release\resources\l10n\en-US.pak"; \
+Source: "{#buildir}\Release\resources\l10n\en-US.pak"; \
 DestDir: "{app}\resources\l10n"; Flags: ignoreversion
 
 Source: "docs\LOOT Metadata Syntax.html"; \
@@ -101,7 +107,7 @@ DestDir: "{app}\docs\images"; Flags: ignoreversion
 Source: "docs\images\settings.png"; \
 DestDir: "{app}\docs\images"; Flags: ignoreversion
 
-Source: "build\Release\resources\ui\index.html"; \
+Source: "{#buildir}\Release\resources\ui\index.html"; \
 DestDir: "{app}\resources\ui"; Flags: ignoreversion
 Source: "resources\ui\css\dark-theme.css"; \
 DestDir: "{app}\resources\ui\css"; Flags: ignoreversion
diff --git a/scripts/vulcanize.js b/scripts/vulcanize.js
index 36e73fda..23a3e592 100644
--- a/scripts/vulcanize.js
+++ b/scripts/vulcanize.js
@@ -4,13 +4,19 @@
 var child_process =  require('child_process');
 var path = require('path');
 var fs = require('fs');
+var helpers = require('./helpers');
 
 if (process.argv.length < 3) {
     var root_path = '.';
 } else {
     var root_path = process.argv[2];
 }
-var output_path = path.join(root_path, 'build', 'Release', 'resources', 'ui');
+
+if (helpers.isMultiArch(root_path)) {
+    var output_path = path.join(root_path, 'build', '32', 'Release', 'resources', 'ui');
+} else {
+    var output_path = path.join(root_path, 'build', 'Release', 'resources', 'ui');
+}
 
 // Makes sure output directory exists first.
 try {