diff --git a/artifacts/ddraw.ini b/artifacts/ddraw.ini
index 0fa6b689..28960061 100644
--- a/artifacts/ddraw.ini
+++ b/artifacts/ddraw.ini
@@ -71,7 +71,7 @@ GraphicsHeight=0
 GPUBlt=0
 
 ;Set to 1 to allow using 32 bit graphics for talking heads
-;Requires graphics mode 4 or 5, and GPUBlt set to 1
+;Requires DX9 graphics mode and v2.0 pixel shader support (see GPUBlt option)
 Use32BitHeadGraphics=0
 
 ;Set to 1 to automatically search for alternative avi video files when Fallout tries to play the game movies
diff --git a/sfall/Bugs.cpp b/sfall/Bugs.cpp
index 3db7cc1c..88c19f6b 100644
--- a/sfall/Bugs.cpp
+++ b/sfall/Bugs.cpp
@@ -2014,6 +2014,28 @@ skip:
 	}
 }
 
+static void __declspec(naked) exec_script_proc_hack() {
+	__asm {
+		mov  eax, [esi + 0x58];
+		test eax, eax;
+		ja   end;
+		inc  eax; // start proc
+end:
+		retn;
+	}
+}
+
+static void __declspec(naked) exec_script_proc_hack1() {
+	__asm {
+		mov  esi, [edi + 0x58];
+		test esi, esi;
+		ja   end;
+		inc  esi; // start proc
+end:
+		retn;
+	}
+}
+
 void BugsInit()
 {
 	// fix vanilla negate operator on float values
@@ -2544,4 +2566,8 @@ void BugsInit()
 	HookCall(0x48D666, obj_load_dude_hook1);
 	BlockCall(0x48D675);
 	BlockCall(0x48D69D);
+
+	// Fix for the start procedure not being called correctly if the required standard script procedure is missing
+	MakeCall(0x4A4926, exec_script_proc_hack);
+	MakeCall(0x4A4979, exec_script_proc_hack1);
 }
diff --git a/sfall/FalloutEngine.cpp b/sfall/FalloutEngine.cpp
index 90e7bee4..6c958302 100644
--- a/sfall/FalloutEngine.cpp
+++ b/sfall/FalloutEngine.cpp
@@ -986,6 +986,10 @@ long __stdcall QueueFindFirst(TGameObj* object, long qType) {
 	}
 }
 
+long __stdcall NewObjId() {
+	__asm call new_obj_id_;
+}
+
 // for the backported AmmoCostHook from 4.x
 long __stdcall ItemWAnimWeap(TGameObj* item, DWORD hitMode) {
 	__asm {
diff --git a/sfall/FalloutEngine.h b/sfall/FalloutEngine.h
index 0165e448..04c1471b 100644
--- a/sfall/FalloutEngine.h
+++ b/sfall/FalloutEngine.h
@@ -1008,6 +1008,8 @@ long __stdcall StatLevel(TGameObj* critter, long statId);
 
 long __stdcall QueueFindFirst(TGameObj* object, long qType);
 
+long __stdcall NewObjId();
+
 // for the backported AmmoCostHook from 4.x
 long __stdcall ItemWAnimWeap(TGameObj* item, DWORD hitMode);
 long __stdcall ItemWComputeAmmoCost(TGameObj* item, DWORD* rounds);
diff --git a/sfall/Knockback.cpp b/sfall/Knockback.cpp
index 405500a3..70e4ac97 100644
--- a/sfall/Knockback.cpp
+++ b/sfall/Knockback.cpp
@@ -202,8 +202,10 @@ void _stdcall KnockbackSetMod(TGameObj* object, DWORD type, float val, DWORD on)
 
 void _stdcall KnockbackRemoveMod(TGameObj* object, DWORD on) {
 	std::vector<KnockbackModifier>* mods;
+	int id = object->ID;
 	switch (on) {
 	case 0:
+		object->ID = NewObjId(); // revert to engine range id
 		mods = &mWeapons;
 		break;
 	case 1:
@@ -216,7 +218,7 @@ void _stdcall KnockbackRemoveMod(TGameObj* object, DWORD on) {
 		return;
 	}
 	for (DWORD i = 0; i < mods->size(); i++) {
-		if ((*mods)[i].id == object->ID) {
+		if ((*mods)[i].id == id) {
 			mods->erase(mods->begin() + i);
 			return;
 		}
diff --git a/sfall/ScriptExtender.h b/sfall/ScriptExtender.h
index 0c0f6184..3beca0bb 100644
--- a/sfall/ScriptExtender.h
+++ b/sfall/ScriptExtender.h
@@ -29,7 +29,7 @@ enum SfallDataType {
 };
 
 enum UniqueID {
-	UID_START = 0x10000000,
+	UID_START = 0x0FFFFFFF, // start at 0x10000000
 	UID_END   = 0x7FFFFFFF
 };
 
diff --git a/sfall/movies.cpp b/sfall/movies.cpp
index c8958d02..74a2c4c6 100644
--- a/sfall/movies.cpp
+++ b/sfall/movies.cpp
@@ -269,7 +269,7 @@ static void __declspec(naked) PlayFrameHook2() {
 	}
 }
 
-static DWORD _cdecl PreparePlayMovie(const DWORD id) {
+static DWORD __cdecl PreparePlayMovie(const DWORD id) {
 	//Get file path in unicode
 	wchar_t path[MAX_PATH];
 	char* master_patches = *(char**)_patches;
@@ -538,7 +538,7 @@ static sDSSound* PlayingSound(wchar_t* path, bool loop) {
 }
 
 static const wchar_t *SoundExtensions[] = { L"mp3", L"wma", L"wav" };
-static bool _cdecl SoundFileLoad(DWORD called, const char* path) {
+static bool __cdecl SoundFileLoad(DWORD called, const char* path) {
 	if (!path || strlen(path) < 4) return false;
 	wchar_t buf[256];
 	mbstowcs_s(0, buf, path, 256);