diff --git a/src/menu/menu.cpp b/src/menu/menu.cpp
index db0fd2efb..86ec78abf 100644
--- a/src/menu/menu.cpp
+++ b/src/menu/menu.cpp
@@ -735,7 +735,11 @@ void M_Ticker (void)
 	if (CurrentMenu != nullptr && menuactive != MENU_Off) 
 	{
 		CurrentMenu->CallTicker();
+	}
 
+	// Check again because menu could be closed from Ticker()
+	if (CurrentMenu != nullptr && menuactive != MENU_Off)
+	{
 		for (int i = 0; i < NUM_MKEYS; ++i)
 		{
 			if (MenuButtons[i].bDown)
diff --git a/src/menu/menudef.cpp b/src/menu/menudef.cpp
index de9c8bc92..39be1eea9 100644
--- a/src/menu/menudef.cpp
+++ b/src/menu/menudef.cpp
@@ -542,7 +542,7 @@ static bool FindMatchingItem(DMenuItemBase *desc)
 	{
 		// Check for presence of menu
 		auto menu = MenuDescriptors.CheckKey(name);
-		if (menu == nullptr) return true;
+		if (menu == nullptr) return false;
 	}
 	else if (grp == 4)
 	{
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 19f9de486..eccfb48af 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -761,35 +761,6 @@ protected:
 private:
 	DLevelScript();
 
-	int getbyte(int *&pc)
-	{
-		CheckInstructionPointer(pc);
-
-		int res = *(uint8_t *)pc;
-		pc = (int *)((uint8_t *)pc+1);
-		return res;
-	}
-
-	int getshort(int *&pc)
-	{
-		CheckInstructionPointer(pc);
-
-		int res = LittleShort( *(int16_t *)pc);
-		pc = (int *)((uint8_t *)pc+2);
-		return res;
-	}
-
-	void CheckInstructionPointer(int *pc) const
-	{
-		const uint32_t offset = activeBehavior->PC2Ofs(pc);
-		const uint32_t size = activeBehavior->GetDataSize();
-
-		if (offset >= size)
-		{
-			I_Error("Out of bounds instruction pointer in ACS VM");
-		}
-	}
-
 	friend class DACSThinker;
 };
 
@@ -844,7 +815,7 @@ TArray<FString> ACS_StringBuilderStack;
 //
 //============================================================================
 
-#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__)
+#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__x86_64__)
 inline int uallong(const int &foo)
 {
 	return foo;
@@ -6925,7 +6896,7 @@ enum
 };
 
 
-#define NEXTWORD	(CheckInstructionPointer(pc), LittleLong(*pc++))
+#define NEXTWORD	(LittleLong(*pc++))
 #define NEXTBYTE	(fmt==ACS_LittleEnhanced?getbyte(pc):NEXTWORD)
 #define NEXTSHORT	(fmt==ACS_LittleEnhanced?getshort(pc):NEXTWORD)
 #define STACK(a)	(Stack[sp - (a)])
@@ -6933,6 +6904,20 @@ enum
 // Direct instructions that take strings need to have the tag applied.
 #define TAGSTR(a)	(a|activeBehavior->GetLibraryID())
 
+inline int getbyte (int *&pc)
+{
+	int res = *(uint8_t *)pc;
+	pc = (int *)((uint8_t *)pc+1);
+	return res;
+}
+
+inline int getshort (int *&pc)
+{
+	int res = LittleShort( *(int16_t *)pc);
+	pc = (int *)((uint8_t *)pc+2);
+	return res;
+}
+
 static bool CharArrayParms(int &capacity, int &offset, int &a, FACSStackMemory& Stack, int &sp, bool ranged)
 {
 	if (ranged)
diff --git a/src/posix/cocoa/i_main.mm b/src/posix/cocoa/i_main.mm
index 5d30341b4..f5c49eaaf 100644
--- a/src/posix/cocoa/i_main.mm
+++ b/src/posix/cocoa/i_main.mm
@@ -226,14 +226,7 @@ void OriginalMainTry(int argc, char** argv)
 namespace
 {
 
-const int ARGC_MAX = 64;
-
-int   s_argc;
-char* s_argv[ARGC_MAX];
-
-TArray<FString> s_argvStorage;
-
-bool s_restartedFromWADPicker;
+TArray<FString> s_argv;
 
 
 void NewFailure()
@@ -348,7 +341,17 @@ ApplicationController* appCtrl;
 	FConsoleWindow::CreateInstance();
 	atterm(FConsoleWindow::DeleteInstance);
 
-	exit(OriginalMain(s_argc, s_argv));
+	const size_t argc = s_argv.Size();
+	TArray<char*> argv(argc + 1, true);
+
+	for (size_t i = 0; i < argc; ++i)
+	{
+		argv[i] = s_argv[i].LockBuffer();
+	}
+
+	argv[argc] = nullptr;
+
+	exit(OriginalMain(argc, &argv[0]));
 }
 
 
@@ -356,20 +359,13 @@ ApplicationController* appCtrl;
 {
 	ZD_UNUSED(theApplication);
 
-	if (s_restartedFromWADPicker
-		|| 0 == [filename length]
-		|| s_argc + 2 >= ARGC_MAX)
-	{
-		return FALSE;
-	}
-
 	// Some parameters from command line are passed to this function
 	// These parameters need to be skipped to avoid duplication
 	// Note: SDL has different approach to fix this issue, see the same method in SDLMain.m
 
 	const char* const charFileName = [filename UTF8String];
 
-	for (int i = 0; i < s_argc; ++i)
+	for (size_t i = 0, count = s_argv.Size(); i < count; ++i)
 	{
 		if (0 == strcmp(s_argv[i], charFileName))
 		{
@@ -377,11 +373,8 @@ ApplicationController* appCtrl;
 		}
 	}
 
-	s_argvStorage.Push("-file");
-	s_argv[s_argc++] = s_argvStorage.Last().LockBuffer();
-
-	s_argvStorage.Push([filename UTF8String]);
-	s_argv[s_argc++] = s_argvStorage.Last().LockBuffer();
+	s_argv.Push("-file");
+	s_argv.Push([filename UTF8String]);
 
 	return TRUE;
 }
@@ -539,21 +532,12 @@ void ReleaseApplicationController()
 
 int main(int argc, char** argv)
 {
-	for (int i = 0; i <= argc; ++i)
+	for (int i = 0; i < argc; ++i)
 	{
 		const char* const argument = argv[i];
 
-		if (NULL == argument || '\0' == argument[0])
-		{
-			continue;
-		}
-
-		if (0 == strcmp(argument, "-wad_picker_restart"))
-		{
-			s_restartedFromWADPicker = true;
-		}
 #if _DEBUG
-		else if (0 == strcmp(argument, "-wait_for_debugger"))
+		if (0 == strcmp(argument, "-wait_for_debugger"))
 		{
 			NSAlert* alert = [[NSAlert alloc] init];
 			[alert setMessageText:@GAMENAME];
@@ -562,11 +546,8 @@ int main(int argc, char** argv)
 			[alert runModal];
 		}
 #endif // _DEBUG
-		else
-		{
-			s_argvStorage.Push(argument);
-			s_argv[s_argc++] = s_argvStorage.Last().LockBuffer();
-		}
+
+		s_argv.Push(argument);
 	}
 
 	NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
diff --git a/src/posix/osx/iwadpicker_cocoa.mm b/src/posix/osx/iwadpicker_cocoa.mm
index 6b8a10b6a..2d8b2057c 100644
--- a/src/posix/osx/iwadpicker_cocoa.mm
+++ b/src/posix/osx/iwadpicker_cocoa.mm
@@ -418,7 +418,6 @@ static void RestartWithParameters(const WadStuff& wad, NSString* parameters)
 			executablePath = @"/usr/bin/arch";
 		}
 
-		[arguments addObject:@"-wad_picker_restart"];
 		[arguments addObject:@"-iwad"];
 		[arguments addObject:[NSString stringWithUTF8String:wad.Path]];
 
diff --git a/src/r_defs.h b/src/r_defs.h
index 02da2ac0e..6a3dfac76 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -394,7 +394,7 @@ public:
 	}
 
 	// Moves a plane up/down by hdiff units
-	double GetChangedHeight(double hdiff)
+	double GetChangedHeight(double hdiff) const
 	{
 		return D - hdiff * normal.Z;
 	}
diff --git a/src/scripting/backend/codegen.cpp b/src/scripting/backend/codegen.cpp
index d504282d1..a8aa1a897 100644
--- a/src/scripting/backend/codegen.cpp
+++ b/src/scripting/backend/codegen.cpp
@@ -8935,7 +8935,7 @@ FxExpression *FxVMFunctionCall::Resolve(FCompileContext& ctx)
 			else
 			{
 				bool writable;
-				ArgList[i] = ArgList[i]->Resolve(ctx);	// nust be resolved before the address is requested.
+				ArgList[i] = ArgList[i]->Resolve(ctx);	// must be resolved before the address is requested.
 				if (ArgList[i] != nullptr && ArgList[i]->ValueType != TypeNullPtr)
 				{
 					if (type == ArgList[i]->ValueType && type->isRealPointer() && type->toPointer()->PointedType->isStruct())
diff --git a/src/scripting/zscript/zcc_compile.cpp b/src/scripting/zscript/zcc_compile.cpp
index 597180605..ab8bef5f0 100644
--- a/src/scripting/zscript/zcc_compile.cpp
+++ b/src/scripting/zscript/zcc_compile.cpp
@@ -1627,7 +1627,7 @@ PType *ZCCCompiler::DetermineType(PType *outertype, ZCC_TreeNode *field, FName n
 			}
 			else
 			{
-				Error(field, "%s: Base type  for dynamic array types nust be integral, but got %s", name.GetChars(), ftype->DescriptiveName());
+				Error(field, "%s: Base type for dynamic array types must be integral, but got %s", name.GetChars(), ftype->DescriptiveName());
 			}
 		}
 		else
diff --git a/src/sound/mididevices/music_win_mididevice.cpp b/src/sound/mididevices/music_win_mididevice.cpp
index d794c7df3..d75a20de2 100644
--- a/src/sound/mididevices/music_win_mididevice.cpp
+++ b/src/sound/mididevices/music_win_mididevice.cpp
@@ -649,18 +649,11 @@ void CALLBACK WinMIDIDevice::CallbackFunc(HMIDIOUT hOut, UINT uMsg, DWORD_PTR dw
 // are done by sending MIDI channel volume messages to the stream, not
 // through midiOutSetVolume().)
 //
-// This is using VC++'s __uuidof extension instead of the the CLSID_ and
-// IID_ definitions because I couldn't figure out why it wasn't finding them
-// when linking, and __uuidof circumvents that problem. I'd also be
-// surprised if w32api includes any WASAPI stuff any time soon, so it's no
-// big loss making this VC++-specific for the time being
-//
 //==========================================================================
 
 static bool IgnoreMIDIVolume(UINT id)
 {
 	MIDIOUTCAPS caps;
-	bool mustcheck = false;
 
 	if (MMSYSERR_NOERROR == midiOutGetDevCaps(id, &caps, sizeof(caps)))
 	{
@@ -668,7 +661,7 @@ static bool IgnoreMIDIVolume(UINT id)
 		{
 			// We cannot determine what this is so we have to assume the worst, as the default
 			// devive's volume control is irreparably broken.
-			mustcheck = true;
+			return true;
 		}
 		// The Microsoft GS Wavetable Synth advertises itself as MIDIDEV_SWSYNTH with a VOLUME control.
 		// If the one we're using doesn't match that, we don't need to bother checking the name.
@@ -676,28 +669,8 @@ static bool IgnoreMIDIVolume(UINT id)
 		{
 			if (strncmp(caps.szPname, "Microsoft GS", 12) == 0)
 			{
-				mustcheck = true;
-			}
-		}
-		if (mustcheck)
-		{
-#ifndef __GNUC__
-			IMMDeviceEnumerator *enumerator;
-
-			// Now try to create an IMMDeviceEnumerator interface. If it succeeds,
-			// we know we're using the new audio stack introduced with Vista and
-			// should ignore this MIDI device's volume control.
-			if (SUCCEEDED(CoCreateInstance(__uuidof(MMDeviceEnumerator), nullptr, CLSCTX_ALL,
-				__uuidof(IMMDeviceEnumerator), (void**)&enumerator))
-				&& enumerator != nullptr)
-			{
-				enumerator->Release();
 				return true;
 			}
-#else
-			// assume the worst and consider volume control broken.
-			return true;
-#endif
 		}
 	}
 	return false;
diff --git a/src/textures/multipatchtexture.cpp b/src/textures/multipatchtexture.cpp
index a765d2d41..46b652e29 100644
--- a/src/textures/multipatchtexture.cpp
+++ b/src/textures/multipatchtexture.cpp
@@ -175,15 +175,14 @@ protected:
 
 	struct TexPart
 	{
-		int16_t OriginX, OriginY;
-		uint8_t Rotate;
-		uint8_t op;
-		FRemapTable *Translation;
-		PalEntry Blend;
-		FTexture *Texture;
-		blend_t Alpha;
-
-		TexPart();
+		FRemapTable *Translation = nullptr;
+		FTexture *Texture = nullptr;
+		PalEntry Blend = 0;
+		blend_t Alpha = FRACUNIT;
+		int16_t OriginX = 0;
+		int16_t OriginY = 0;
+		uint8_t Rotate = 0;
+		uint8_t op = OP_COPY;
 	};
 
 	struct TexInit
@@ -797,23 +796,6 @@ FTexture *FMultiPatchTexture::GetRawTexture()
 	return NumParts == 1 ? Parts->Texture : this;
 }
 
-//==========================================================================
-//
-// FMultiPatchTexture :: TexPart :: TexPart
-//
-//==========================================================================
-
-FMultiPatchTexture::TexPart::TexPart()
-{
-	OriginX = OriginY = 0;
-	Rotate = 0;
-	Texture = NULL;
-	Translation = NULL;
-	Blend = 0;
-	Alpha = FRACUNIT;
-	op = OP_COPY;
-}
-
 //==========================================================================
 //
 // FTextureManager :: AddTexturesLump
@@ -1369,7 +1351,7 @@ void FMultiPatchTexture::ResolvePatches()
 		{
 			if (Parts[i].Texture == nullptr)
 			{
-				memcpy(&Parts[i], &Parts[i + 1], NumParts - i - 1);
+				memcpy(&Parts[i], &Parts[i + 1], (NumParts - i - 1) * sizeof(TexPart));
 				i--;
 				NumParts--;
 			}
diff --git a/wadsrc/static/zscript/mapdata.txt b/wadsrc/static/zscript/mapdata.txt
index 8914fd405..99134a70a 100644
--- a/wadsrc/static/zscript/mapdata.txt
+++ b/wadsrc/static/zscript/mapdata.txt
@@ -184,7 +184,7 @@ struct SecPlane native play
 	native bool isEqual(Secplane other) const;
 	native void ChangeHeight(double hdiff);
 	native double GetChangedHeight(double hdiff) const;
-	native double HeightDiff(double oldd, double newd = 0.0);
+	native double HeightDiff(double oldd, double newd = 0.0) const;
 	native double PointToDist(Vector2 xy, double z) const;
 }
 
diff --git a/wadsrc/static/zscript/menu/conversationmenu.txt b/wadsrc/static/zscript/menu/conversationmenu.txt
index abda3dee2..8d05ee4ba 100644
--- a/wadsrc/static/zscript/menu/conversationmenu.txt
+++ b/wadsrc/static/zscript/menu/conversationmenu.txt
@@ -46,6 +46,8 @@ struct StrifeDialogueNode native version("2.4")
 	native String Goodbye;
 
 	native StrifeDialogueReply Children;
+	native Name MenuClassName;
+	native String UserData;
 }
 
 // FStrifeDialogueReply holds responses the player can give to the NPC
diff --git a/wadsrc/static/zscript/shared/movingcamera.txt b/wadsrc/static/zscript/shared/movingcamera.txt
index 6ed206d4b..2bce93608 100644
--- a/wadsrc/static/zscript/shared/movingcamera.txt
+++ b/wadsrc/static/zscript/shared/movingcamera.txt
@@ -62,6 +62,8 @@ class InterpolationPoint : Actor
 		Next = null;
 	}
 
+	override void Tick () {}		// Nodes do no thinking
+
 	void FormChain ()
 	{
 		let me = self;