diff --git a/src/actionspecials.h b/src/actionspecials.h
index 9b9c38cb97..3edb1671d3 100644
--- a/src/actionspecials.h
+++ b/src/actionspecials.h
@@ -258,5 +258,6 @@ DEFINE_SPECIAL(Ceiling_LowerByTexture, 269, 2, 4, 4)
 DEFINE_SPECIAL(Stairs_BuildDownDoom, 270, 5, 5, 5)
 DEFINE_SPECIAL(Stairs_BuildUpDoomSync, 271, 4, 4, 4)
 DEFINE_SPECIAL(Stairs_BuildDownDoomSync, 272, 4, 4, 4)
+DEFINE_SPECIAL(Stairs_BuildUpDoomCrush, 273, 5, 5, 5)
 
 #undef DEFINE_SPECIAL
diff --git a/src/c_dispatch.cpp b/src/c_dispatch.cpp
index d112634d6a..296697ee76 100644
--- a/src/c_dispatch.cpp
+++ b/src/c_dispatch.cpp
@@ -1040,7 +1040,11 @@ FString BuildString (int argc, FString *argv)
 
 		for (arg = 0; arg < argc; arg++)
 		{
-			if (strchr(argv[arg], '"'))
+			if (argv[arg][0] == '\0')
+			{ // It's an empty argument, we need to convert it to '""'
+				buf << "\"\" ";
+			}
+			else if (strchr(argv[arg], '"'))
 			{ // If it contains one or more quotes, we need to escape them.
 				buf << '"';
 				long substr_start = 0, quotepos;
diff --git a/src/dthinker.cpp b/src/dthinker.cpp
index fd20a4e79a..11ba54dbc9 100644
--- a/src/dthinker.cpp
+++ b/src/dthinker.cpp
@@ -675,6 +675,9 @@ DThinker *FThinkerIterator::Next (bool exact)
 					{
 						return thinker;
 					}
+					// This can actually happen when a Destroy call on 'thinker' happens to destroy 'm_CurrThinker'.
+					// In that case there is no chance to recover, we have to terminate the iteration of this list.
+					if (m_CurrThinker == nullptr) break;
 				}
 			}
 			if ((m_SearchingFresh = !m_SearchingFresh))
diff --git a/src/g_inventory/a_pickups.cpp b/src/g_inventory/a_pickups.cpp
index 3c1d32d420..438293d403 100644
--- a/src/g_inventory/a_pickups.cpp
+++ b/src/g_inventory/a_pickups.cpp
@@ -644,6 +644,8 @@ void AInventory::BecomeItem ()
 	RemoveFromHash ();
 	flags &= ~MF_SPECIAL;
 	ChangeStatNum(STAT_INVENTORY);
+	// stop all sounds this item is playing.
+	for(int i = 1;i<=7;i++) S_StopSound(this, i);
 	SetState (FindState("Held"));
 }
 
diff --git a/src/gi.cpp b/src/gi.cpp
index 9d45d27242..c821288893 100644
--- a/src/gi.cpp
+++ b/src/gi.cpp
@@ -307,6 +307,9 @@ void FMapInfoParser::ParseGameInfo()
 		GAMEINFOKEY_STRINGARRAY(finalePages, "finalePage", 8, true)
 		GAMEINFOKEY_STRINGARRAY(infoPages, "addinfoPage", 8, false)
 		GAMEINFOKEY_STRINGARRAY(infoPages, "infoPage", 8, true)
+		GAMEINFOKEY_STRINGARRAY(PrecachedClasses, "precacheclasses", 0, false)
+		GAMEINFOKEY_STRINGARRAY(PrecachedTextures, "precachetextures", 0, false)
+		GAMEINFOKEY_STRINGARRAY(PrecachedSounds, "precachesounds", 0, false)
 		GAMEINFOKEY_STRING(PauseSign, "pausesign")
 		GAMEINFOKEY_STRING(quitSound, "quitSound")
 		GAMEINFOKEY_STRING(BorderFlat, "borderFlat")
diff --git a/src/gi.h b/src/gi.h
index c5b8f79cfd..d9e81bcf11 100644
--- a/src/gi.h
+++ b/src/gi.h
@@ -36,6 +36,7 @@
 
 #include "basictypes.h"
 #include "zstring.h"
+#include "s_sound.h"
 
 // Flags are not user configurable and only depend on the standard IWADs
 #define GI_MAPxx				0x00000001
@@ -120,6 +121,10 @@ struct gameinfo_t
 	TArray<FName> DefaultWeaponSlots[10];
 	TArray<FName> PlayerClasses;
 
+	TArray<FName> PrecachedClasses;
+	TArray<FString> PrecachedTextures;
+	TArray<FSoundID> PrecachedSounds;
+
 	FString titleMusic;
 	int titleOrder;
 	float titleTime;
diff --git a/src/menu/playermenu.cpp b/src/menu/playermenu.cpp
index 9f5196367a..ea22fdd71d 100644
--- a/src/menu/playermenu.cpp
+++ b/src/menu/playermenu.cpp
@@ -1108,6 +1108,9 @@ bool DPlayerMenu::MouseEvent(int type, int x, int y)
 				SendNewColor (RPART(color), GPART(color), v);
 			}
 			break;
+		case NAME_Autoaim:
+			AutoaimChanged(li);
+			break;
 		}
 	}
 	return res;
diff --git a/src/p_effect.cpp b/src/p_effect.cpp
index eb872edc1f..96295d6f53 100644
--- a/src/p_effect.cpp
+++ b/src/p_effect.cpp
@@ -272,7 +272,7 @@ void P_ThinkParticles ()
 		auto oldtrans = particle->alpha;
 		particle->alpha -= particle->fadestep;
 		particle->size += particle->sizestep;
-		if (oldtrans < particle->alpha || --particle->ttl <= 0 || (particle->size <= 0))
+		if (particle->alpha <= 0 || oldtrans < particle->alpha || --particle->ttl <= 0 || (particle->size <= 0))
 		{ // The particle has expired, so free it
 			memset (particle, 0, sizeof(particle_t));
 			if (prev)
@@ -763,7 +763,7 @@ void P_DrawRailTrail(AActor *source, TArray<SPortalHit> &portalhits, int color1,
 			int spiralduration = (duration == 0) ? 35 : duration;
 
 			p->alpha = 1.f;
-			p->ttl = duration;
+			p->ttl = spiralduration;
 			p->fadestep = FADEFROMTTL(spiralduration);
 			p->size = 3;
 			p->bright = fullbright;
diff --git a/src/p_floor.cpp b/src/p_floor.cpp
index fbfa70f2e7..68602ab0ae 100644
--- a/src/p_floor.cpp
+++ b/src/p_floor.cpp
@@ -626,7 +626,7 @@ bool EV_BuildStairs (int tag, DFloor::EStair type, line_t *line,
 		floor->m_PauseTime = 0;
 		floor->m_StepTime = floor->m_PerStepTime = persteptime;
 
-		floor->m_Crush = (!(usespecials & DFloor::stairUseSpecials) && speed == 4) ? 10 : -1; //jff 2/27/98 fix uninitialized crush field
+		floor->m_Crush = (usespecials & DFloor::stairCrush) ? 10 : -1; //jff 2/27/98 fix uninitialized crush field
 		floor->m_Hexencrush = false;
 
 		floor->m_Speed = speed;
diff --git a/src/p_lnspec.cpp b/src/p_lnspec.cpp
index d368739e16..0ce41e1264 100644
--- a/src/p_lnspec.cpp
+++ b/src/p_lnspec.cpp
@@ -591,6 +591,13 @@ FUNC(LS_Stairs_BuildUpDoom)
 						   arg2, SPEED(arg1), TICS(arg3), arg4, 0, 0);
 }
 
+FUNC(LS_Stairs_BuildUpDoomCrush)
+// Stairs_BuildUpDoom (tag, speed, height, delay, reset)
+{
+	return EV_BuildStairs(arg0, DFloor::buildUp, ln,
+		arg2, SPEED(arg1), TICS(arg3), arg4, 0, DFloor::stairCrush);
+}
+
 FUNC(LS_Stairs_BuildDownDoom)
 // Stair_BuildDownDoom (tag, speed, height, delay, reset)
 {
@@ -3582,6 +3589,7 @@ static lnSpecFunc LineSpecials[] =
 	/* 270 */ LS_Stairs_BuildDownDoom,
 	/* 271 */ LS_Stairs_BuildUpDoomSync,
 	/* 272 */ LS_Stairs_BuildDownDoomSync,
+	/* 273 */ LS_Stairs_BuildUpDoomCrush,
 
 };
 
diff --git a/src/p_setup.cpp b/src/p_setup.cpp
index 7a026e172e..6e2d7ed6d1 100644
--- a/src/p_setup.cpp
+++ b/src/p_setup.cpp
@@ -3383,6 +3383,11 @@ static void P_PrecacheLevel()
 		actorhitlist[actor->GetClass()] = true;
 	}
 
+	for (auto n : gameinfo.PrecachedClasses)
+	{
+		PClassActor *cls = PClass::FindActor(n);
+		if (cls != NULL) actorhitlist[cls] = true;
+	}
 	for (unsigned i = 0; i < level.info->PrecacheClasses.Size(); i++)
 	{
 		// level.info can only store names, no class pointers.
@@ -3419,6 +3424,11 @@ static void P_PrecacheLevel()
 		hitlist[sky2texture.GetIndex()] |= FTextureManager::HIT_Sky;
 	}
 
+	for (auto n : gameinfo.PrecachedTextures)
+	{
+		FTextureID tex = TexMan.CheckForTexture(n, FTexture::TEX_Wall, FTextureManager::TEXMAN_Overridable | FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
+		if (tex.Exists()) hitlist[tex.GetIndex()] |= FTextureManager::HIT_Wall;
+	}
 	for (unsigned i = 0; i < level.info->PrecacheTextures.Size(); i++)
 	{
 		FTextureID tex = TexMan.CheckForTexture(level.info->PrecacheTextures[i], FTexture::TEX_Wall, FTextureManager::TEXMAN_Overridable | FTextureManager::TEXMAN_TryAny | FTextureManager::TEXMAN_ReturnFirst);
diff --git a/src/p_sight.cpp b/src/p_sight.cpp
index df02e2ebbd..f00e59e8ff 100644
--- a/src/p_sight.cpp
+++ b/src/p_sight.cpp
@@ -116,6 +116,7 @@ class SightCheck
 		sightend = t2->PosRelative(task->portalgroup);
 		sightstart.Z += t1->Height * 0.75;
 
+		portalgroup = task->portalgroup;
 		Startfrac = task->Frac;
 		Trace = { sightstart.X, sightstart.Y, sightend.X - sightstart.X, sightend.Y - sightstart.Y };
 		Lastztop = Lastzbottom = sightstart.Z;
@@ -790,6 +791,7 @@ sightcounts[2]++;
 
 	bool traverseres = P_SightTraverseIntercepts ( );
 	if (itres == -1) return false;	// if the iterator had an early out there was no line of sight. The traverser was only called to collect more portals.
+	if (seeingthing->Sector->PortalGroup != portalgroup) return false;	// We are in a different group than the seeingthing, so this trace cannot determine visibility alone.
 	return traverseres;
 }
 
diff --git a/src/p_spec.h b/src/p_spec.h
index ea98c82c14..a2fd0727ac 100644
--- a/src/p_spec.h
+++ b/src/p_spec.h
@@ -503,7 +503,8 @@ class DFloor : public DMovingFloor
 	enum EStairType
 	{
 		stairUseSpecials = 1,
-		stairSync = 2
+		stairSync = 2,
+		stairCrush = 4,
 	};
 
 	DFloor (sector_t *sec);
diff --git a/src/r_draw.cpp b/src/r_draw.cpp
index 994d870952..730430b2a3 100644
--- a/src/r_draw.cpp
+++ b/src/r_draw.cpp
@@ -467,7 +467,7 @@ namespace swrenderer
 				R_SetColorMapLight(basecolormap, 0, 0);
 			}
 			bool active_columnmethod = r_columnmethod && !r_swtruecolor;
-			return active_columnmethod ? DoDraw1 : DoDraw0;
+			return active_columnmethod ? DoDraw0;
 		}
 
 		fglevel = GetAlpha(style.SrcAlpha, alpha);
@@ -501,7 +501,7 @@ namespace swrenderer
 			return DontDraw;
 		}
 		bool active_columnmethod = r_columnmethod && !r_swtruecolor;
-		return active_columnmethod ? DoDraw1 : DoDraw0;
+		return active_columnmethod ? DoDraw0;
 	}
 
 	ESPSResult R_SetPatchStyle(FRenderStyle style, float alpha, int translation, uint32_t color)
diff --git a/src/s_sound.cpp b/src/s_sound.cpp
index be1b572f1c..1c7c5aea19 100644
--- a/src/s_sound.cpp
+++ b/src/s_sound.cpp
@@ -480,6 +480,10 @@ void S_PrecacheLevel ()
 		{
 			actor->MarkPrecacheSounds();
 		}
+		for (auto i : gameinfo.PrecachedSounds)
+		{
+			level.info->PrecacheSounds[i].MarkUsed();
+		}
 		// Precache all extra sounds requested by this map.
 		for (i = 0; i < level.info->PrecacheSounds.Size(); ++i)
 		{
diff --git a/src/scripting/zscript/zcc_compile.cpp b/src/scripting/zscript/zcc_compile.cpp
index 9684ec9246..52cbc1d653 100644
--- a/src/scripting/zscript/zcc_compile.cpp
+++ b/src/scripting/zscript/zcc_compile.cpp
@@ -2336,6 +2336,7 @@ void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool
 			sym->Variants[0].Implementation->DefaultArgs = std::move(argdefaults);
 		}
 
+		PClass *clstype = static_cast<PClass *>(c->Type());
 		if (varflags & VARF_Virtual)
 		{
 			if (sym->Variants[0].Implementation == nullptr)
@@ -2349,7 +2350,6 @@ void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool
 			}
 			if (forclass)
 			{
-				PClass *clstype = static_cast<PClass *>(c->Type());
 				int vindex = clstype->FindVirtualIndex(sym->SymbolName, sym->Variants[0].Proto);
 				// specifying 'override' is necessary to prevent one of the biggest problem spots with virtual inheritance: Mismatching argument types.
 				if (varflags & VARF_Override)
@@ -2383,6 +2383,14 @@ void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool
 				Error(p, "Virtual functions can only be defined for classes");
 			}
 		}
+		else if (forclass)
+		{
+			int vindex = clstype->FindVirtualIndex(sym->SymbolName, sym->Variants[0].Proto);
+			if (vindex != -1)
+			{
+				Error(f, "Function %s attempts to override parent function without 'override' qualifier", FName(f->Name).GetChars());
+			}
+		}
 	}
 }
 
diff --git a/src/sound/oalsound.cpp b/src/sound/oalsound.cpp
index 53c471a316..1b34583f94 100644
--- a/src/sound/oalsound.cpp
+++ b/src/sound/oalsound.cpp
@@ -407,7 +407,7 @@ class OpenALSoundStream : public SoundStream
     virtual FString GetStats()
         {
         FString stats;
-        size_t pos, len;
+        size_t pos = 0, len = 0;
         ALfloat volume;
         ALint offset;
         ALint processed;
@@ -429,28 +429,34 @@ class OpenALSoundStream : public SoundStream
             return stats;
         }
 
-        pos = Decoder->getSampleOffset();
-        len = Decoder->getSampleLength();
+		if (Decoder != nullptr)
+		{
+			pos = Decoder->getSampleOffset();
+			len = Decoder->getSampleLength();
+		}
         lock.unlock();
 
         stats = (state == AL_INITIAL) ? "Buffering" : (state == AL_STOPPED) ? "Underrun" :
                 (state == AL_PLAYING || state == AL_PAUSED) ? "Ready" : "Unknown state";
 
-        if(state == AL_STOPPED)
-            offset = BufferCount * (Data.Size()/FrameSize);
-        else
-        {
-            size_t rem = queued*(Data.Size()/FrameSize) - offset;
-            if(pos > rem) pos -= rem;
-            else if(len > 0) pos += len - rem;
-            else pos = 0;
-        }
-        pos = (size_t)(pos * 1000.0 / SampleRate);
-        len = (size_t)(len * 1000.0 / SampleRate);
-        stats.AppendFormat(",%3u%% buffered", 100 - 100*offset/(BufferCount*(Data.Size()/FrameSize)));
-        stats.AppendFormat(", %zu.%03zu", pos/1000, pos%1000);
-        if(len > 0)
-            stats.AppendFormat(" / %zu.%03zu", len/1000, len%1000);
+		if (Decoder != nullptr)
+		{
+			if (state == AL_STOPPED)
+				offset = BufferCount * (Data.Size() / FrameSize);
+			else
+			{
+				size_t rem = queued*(Data.Size() / FrameSize) - offset;
+				if (pos > rem) pos -= rem;
+				else if (len > 0) pos += len - rem;
+				else pos = 0;
+			}
+			pos = (size_t)(pos * 1000.0 / SampleRate);
+			len = (size_t)(len * 1000.0 / SampleRate);
+			stats.AppendFormat(",%3u%% buffered", 100 - 100 * offset / (BufferCount*(Data.Size() / FrameSize)));
+			stats.AppendFormat(", %zu.%03zu", pos / 1000, pos % 1000);
+			if (len > 0)
+				stats.AppendFormat(" / %zu.%03zu", len / 1000, len % 1000);
+		}
         if(state == AL_PAUSED)
             stats += ", paused";
         if(state == AL_PLAYING)
diff --git a/src/version.h b/src/version.h
index cb15287634..98c523b9f4 100644
--- a/src/version.h
+++ b/src/version.h
@@ -41,12 +41,12 @@ const char *GetVersionString();
 
 /** Lots of different version numbers **/
 
-#define VERSIONSTR "1.2.1"
+#define VERSIONSTR "1.2.2"
 
 // The version as seen in the Windows resource
-#define RC_FILEVERSION 1,2,1,0
-#define RC_PRODUCTVERSION 1,2,1,0
-#define RC_PRODUCTVERSION2 "1.2.1"
+#define RC_FILEVERSION 1,2,2,0
+#define RC_PRODUCTVERSION 1,2,2,0
+#define RC_PRODUCTVERSION2 "1.2.2"
 
 // Version identifier for network games.
 // Bump it every time you do a release unless you're certain you
diff --git a/src/win32/win32gliface.cpp b/src/win32/win32gliface.cpp
index be8b52e042..1323787a96 100644
--- a/src/win32/win32gliface.cpp
+++ b/src/win32/win32gliface.cpp
@@ -354,6 +354,11 @@ DFrameBuffer *Win32GLVideo::CreateFrameBuffer(int width, int height, bool bgra,
 {
 	Win32GLFrameBuffer *fb;
 
+	if (fs)
+	{
+		I_ClosestResolution(&width, &height, 32);
+	}
+
 	m_DisplayWidth = width;
 	m_DisplayHeight = height;
 	m_DisplayBits = 32;
diff --git a/src/win32/win32video.cpp b/src/win32/win32video.cpp
index e07ca36609..a39f3e65e7 100644
--- a/src/win32/win32video.cpp
+++ b/src/win32/win32video.cpp
@@ -641,6 +641,11 @@ DFrameBuffer *Win32Video::CreateFrameBuffer (int width, int height, bool bgra, b
 	PalEntry flashColor;
 	int flashAmount;
 
+	if (fullscreen)
+	{
+		I_ClosestResolution(&width, &height, D3D ? 32 : 8);
+	}
+
 	LOG4 ("CreateFB %d %d %d %p\n", width, height, fullscreen, old);
 
 	if (old != NULL)
diff --git a/wadsrc/static/language.enu b/wadsrc/static/language.enu
index d03d19db2a..cd1586d587 100644
--- a/wadsrc/static/language.enu
+++ b/wadsrc/static/language.enu
@@ -1780,7 +1780,6 @@ DSPLYMNU_SCREENSIZE				= "Screen size";
 DSPLYMNU_BRIGHTNESS				= "Brightness";
 DSPLYMNU_VSYNC					= "Vertical Sync";
 DSPLYMNU_CAPFPS					= "Rendering Interpolation";
-DSPLYMNU_COLUMNMETHOD			= "Column render mode";
 DSPLYMNU_WIPETYPE				= "Screen wipe style";
 DSPLYMNU_SHOWENDOOM				= "Show ENDOOM screen";
 DSPLYMNU_BLOODFADE				= "Blood Flash Intensity";
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 29d3a1b10e..4db5d70517 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -595,12 +595,6 @@ OptionMenu "JoystickConfigMenu"
 //
 //-------------------------------------------------------------------------------------------
 
-OptionValue ColumnMethods
-{
-	0.0, "$OPTVAL_ORIGINAL"
-	1.0, "$OPTVAL_OPTIMIZED"
-}
-
 OptionValue SkyModes
 {
 	0.0, "$OPTVAL_NORMAL"
@@ -696,7 +690,6 @@ OptionMenu "VideoOptions"
 	Slider "$DSPLYMNU_BLOODFADE",				"blood_fade_scalar", 0.0, 1.0, 0.05, 2
 	Slider "$DSPLYMNU_PICKUPFADE",				"pickup_fade_scalar", 0.0, 1.0, 0.05, 2
 	Slider "$DSPLYMNU_WATERFADE",				"underwater_fade_scalar", 0.0, 1.0, 0.05, 2
-	Option "$DSPLYMNU_COLUMNMETHOD",			"r_columnmethod", "ColumnMethods"
 
 	StaticText " "
 	Option "$DSPLYMNU_WIPETYPE",				"wipetype", "Wipes"
diff --git a/wadsrc/static/xlat/base.txt b/wadsrc/static/xlat/base.txt
index 8a99ba3183..0fc02739ef 100644
--- a/wadsrc/static/xlat/base.txt
+++ b/wadsrc/static/xlat/base.txt
@@ -99,7 +99,7 @@ include "xlat/defines.i"
  97 = WALK|REP|MONST,	Teleport (0, tag)
  98 = WALK|REP,		Floor_LowerToHighest (tag, F_FAST, 136)
  99 = USE|REP,		Door_LockedRaise (tag, D_FAST, 0, BCard | CardIsSkull)
-100 = WALK,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+100 = WALK,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 101 = USE,		Floor_RaiseToLowestCeiling (tag, F_SLOW)
 102 = USE,		Floor_LowerToHighest (tag, F_SLOW, 128)
 103 = USE,		Door_Open (tag, D_SLOW)
@@ -126,7 +126,7 @@ include "xlat/defines.i"
 124 = WALK,		Exit_Secret (0)
 125 = MONWALK,		Teleport (0, tag)
 126 = MONWALK|REP,	Teleport (0, tag)
-127 = USE,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+127 = USE,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 128 = WALK|REP,		Floor_RaiseToNearest (tag, F_SLOW)
 129 = WALK|REP,		Floor_RaiseToNearest (tag, F_FAST)
 130 = WALK,		Floor_RaiseToNearest (tag, F_FAST)
@@ -259,9 +259,9 @@ include "xlat/defines.i"
 254 = 0,		Scroll_Texture_Model (lineid, 0)
 255 = 0,		Scroll_Texture_Offsets ()
 256 = WALK|REP,		Stairs_BuildUpDoom (tag, ST_SLOW, 8, 0, 0)
-257 = WALK|REP,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+257 = WALK|REP,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 258 = USE|REP,		Stairs_BuildUpDoom (tag, ST_SLOW, 8, 0, 0)
-259 = USE|REP,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+259 = USE|REP,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 260 = 0,		TranslucentLine (lineid, 168)	// Changed to better reflect the BOOM default
 261 = 0,		Transfer_CeilingLight (tag)
 262 = WALK|MONST,	Teleport_Line (tag, tag, 1)
diff --git a/wadsrc/static/xlat/strife.txt b/wadsrc/static/xlat/strife.txt
index 50fcb2ff8e..e4ae8244f1 100644
--- a/wadsrc/static/xlat/strife.txt
+++ b/wadsrc/static/xlat/strife.txt
@@ -120,7 +120,7 @@ RetailOnly		= 121
 104 = WALK,		Light_MinNeighbor (tag)
 108 = WALK,		Door_Raise (tag, D_FAST, VDOORWAIT)
 109 = WALK,		Door_Open (tag, D_FAST)
-100 = WALK,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+100 = WALK,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 197 = WALK|REP,	ACS_ExecuteAlways (0, 0, 197, tag)
 110 = WALK,		Door_Close (tag, D_FAST)
 119 = WALK,		Floor_RaiseToNearest (tag, F_SLOW)
@@ -255,7 +255,7 @@ RetailOnly		= 121
 112 = USE,		Door_Open (tag, D_FAST)
 113 = USE,		Door_Close (tag, D_FAST)
 122 = USE,		Plat_DownWaitUpStayLip (tag, P_TURBO, PLATWAIT, 0)
-127 = USE,		Stairs_BuildUpDoom (tag, ST_TURBO, 16, 0, 0)
+127 = USE,		Stairs_BuildUpDoomCrush (tag, ST_TURBO, 16, 0, 0)
 131 = USE,		Floor_RaiseToNearest (tag, F_FAST)
 133 = USE,		Door_LockedRaise (tag, D_FAST, 0, 4)
 135 = USE,		Door_LockedRaise (tag, D_FAST, 0, 11)
diff --git a/wadsrc/static/zscript/heretic/hereticartifacts.txt b/wadsrc/static/zscript/heretic/hereticartifacts.txt
index 20f52a2c93..3b7f14ad82 100644
--- a/wadsrc/static/zscript/heretic/hereticartifacts.txt
+++ b/wadsrc/static/zscript/heretic/hereticartifacts.txt
@@ -66,7 +66,7 @@ Class ArtiTomeOfPower : PowerupGiver
 		Loop;
 	}
 	
-	bool Use (bool pickup)
+	override bool Use (bool pickup)
 	{
 		Playerinfo p = Owner.player;
 		if (p && p.morphTics && (p.MorphStyle & MRF_UNDOBYTOMEOFPOWER))
diff --git a/wadsrc/static/zscript/heretic/weaponblaster.txt b/wadsrc/static/zscript/heretic/weaponblaster.txt
index 913abffdb6..e7e1e92b55 100644
--- a/wadsrc/static/zscript/heretic/weaponblaster.txt
+++ b/wadsrc/static/zscript/heretic/weaponblaster.txt
@@ -220,7 +220,7 @@ class Ripper : Actor
 		Stop;
 	}
 	
-	int DoSpecialDamage (Actor target, int damage, Name damagetype)
+	override int DoSpecialDamage (Actor target, int damage, Name damagetype)
 	{
 		if (target is "Ironlich")
 		{ // Less damage to Ironlich bosses
diff --git a/wadsrc/static/zscript/heretic/weaponphoenix.txt b/wadsrc/static/zscript/heretic/weaponphoenix.txt
index eb75acb1dd..558a257cdd 100644
--- a/wadsrc/static/zscript/heretic/weaponphoenix.txt
+++ b/wadsrc/static/zscript/heretic/weaponphoenix.txt
@@ -311,7 +311,7 @@ class PhoenixFX2 : Actor
 	}
 	
 
-	int DoSpecialDamage (Actor target, int damage, Name damagetype)
+	override int DoSpecialDamage (Actor target, int damage, Name damagetype)
 	{
 		if (target.player && Random[PhoenixFX2]() < 128)
 		{ // Freeze player for a bit
diff --git a/wadsrc/static/zscript/heretic/weaponskullrod.txt b/wadsrc/static/zscript/heretic/weaponskullrod.txt
index a8d77e1d8c..da959f7ae7 100644
--- a/wadsrc/static/zscript/heretic/weaponskullrod.txt
+++ b/wadsrc/static/zscript/heretic/weaponskullrod.txt
@@ -402,7 +402,7 @@ class RainPillar : Actor
 
 	// Rain pillar 1 ------------------------------------------------------------
 
-	int DoSpecialDamage (Actor target, int damage, Name damagetype)
+	override int DoSpecialDamage (Actor target, int damage, Name damagetype)
 	{
 		if (target.bBoss)
 		{ // Decrease damage for bosses
diff --git a/wadsrc/static/zscript/hexen/heresiarch.txt b/wadsrc/static/zscript/hexen/heresiarch.txt
index db4860c349..f89d2fb839 100644
--- a/wadsrc/static/zscript/hexen/heresiarch.txt
+++ b/wadsrc/static/zscript/hexen/heresiarch.txt
@@ -112,7 +112,7 @@ class Heresiarch : Actor
 		Stop;
 	}
 
-	void Die (Actor source, Actor inflictor, int dmgflags)
+	override void Die (Actor source, Actor inflictor, int dmgflags)
 	{
 		// The heresiarch just executes a script instead of a special upon death
 		int script = special;
@@ -698,8 +698,8 @@ class SorcBall2 : SorcBall
 
 		Actor parent = target;
 		Actor mo = Spawn("SorcFX2", Pos + (0, 0, parent.Floorclip + Heresiarch.SORC_DEFENSE_HEIGHT), ALLOW_REPLACE);
-		bReflective = true;
-		bInvulnerable = true;
+		parent.bReflective = true;
+		parent.bInvulnerable = true;
 		parent.args[0] = Heresiarch.SORC_DEFENSE_TIME;
 		if (mo) mo.target = parent;
 	}
diff --git a/wadsrc/static/zscript/shared/setcolor.txt b/wadsrc/static/zscript/shared/setcolor.txt
index 18105ef543..2d9d3be576 100644
--- a/wadsrc/static/zscript/shared/setcolor.txt
+++ b/wadsrc/static/zscript/shared/setcolor.txt
@@ -28,7 +28,7 @@ class FadeSetter : Actor
 		RenderStyle "None";
 	}
 	
-	void PostBeginPlay()
+	override void PostBeginPlay()
 	{
 		Super.PostBeginPlay();
 		CurSector.SetFade(color(args[0], args[1], args[2]));
diff --git a/wadsrc/static/zscript/strife/weapongrenade.txt b/wadsrc/static/zscript/strife/weapongrenade.txt
index 7a775c57ba..21e568313c 100644
--- a/wadsrc/static/zscript/strife/weapongrenade.txt
+++ b/wadsrc/static/zscript/strife/weapongrenade.txt
@@ -241,7 +241,7 @@ class PhosphorousFire : Actor
 		Stop;
 	}
 	
-	int DoSpecialDamage (Actor target, int damage, Name damagetype)
+	override int DoSpecialDamage (Actor target, int damage, Name damagetype)
 	{
 		if (target.bNoBlood)
 		{