diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bc7ee527e..e0a5bcd70 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -229,7 +229,7 @@ target_link_libraries(SRB2SDL2 PRIVATE glad::glad)
 target_link_libraries(SRB2SDL2 PRIVATE fmt)
 target_link_libraries(SRB2SDL2 PRIVATE imgui::imgui)
 
-target_link_libraries(SRB2SDL2 PRIVATE acsvm::acsvm)
+target_link_libraries(SRB2SDL2 PRIVATE acsvm)
 
 set(SRB2_HAVE_THREADS ON)
 target_compile_definitions(SRB2SDL2 PRIVATE -DHAVE_THREADS)
diff --git a/src/command.c b/src/command.c
index 8b8001363..651540b5f 100644
--- a/src/command.c
+++ b/src/command.c
@@ -730,7 +730,7 @@ static void COM_ExecuteString(char *ptext)
 	// check cvars
 	// Hurdler: added at Ebola's request ;)
 	// (don't flood the console in software mode with bad gl_xxx command)
-	if (!CV_Command() && con_destlines)
+	if (!CV_Command() && (con_destlines || dedicated))
 		CONS_Printf(M_GetText("Unknown command '%s'\n"), COM_Argv(0));
 }
 
diff --git a/src/hardware/hw_main.c b/src/hardware/hw_main.c
index 32f46bda3..d729439cc 100644
--- a/src/hardware/hw_main.c
+++ b/src/hardware/hw_main.c
@@ -5362,21 +5362,24 @@ static void HWR_ProjectSprite(mobj_t *thing)
 	if (thing->renderflags & RF_SHADOWEFFECTS)
 	{
 		mobj_t *caster = thing->target;
-		interpmobjstate_t casterinterp = {0};
-
-		if (R_UsingFrameInterpolation() && !paused)
-		{
-			R_InterpolateMobjState(caster, rendertimefrac, &casterinterp);
-		}
-		else
-		{
-			R_InterpolateMobjState(caster, FRACUNIT, &casterinterp);
-		}
 
 		if (caster && !P_MobjWasRemoved(caster))
 		{
-			fixed_t groundz = R_GetShadowZ(thing, NULL);
-			fixed_t floordiff = abs(((thing->eflags & MFE_VERTICALFLIP) ? caster->height : 0) + casterinterp.z - groundz);
+			interpmobjstate_t casterinterp = {0};
+			fixed_t groundz;
+			fixed_t floordiff; 
+
+			if (R_UsingFrameInterpolation() && !paused)
+			{
+				R_InterpolateMobjState(caster, rendertimefrac, &casterinterp);
+			}
+			else
+			{
+				R_InterpolateMobjState(caster, FRACUNIT, &casterinterp);
+			}
+			
+			groundz = R_GetShadowZ(thing, NULL);
+			floordiff = abs(((thing->eflags & MFE_VERTICALFLIP) ? caster->height : 0) + casterinterp.z - groundz);
 
 			shadowheight = FIXED_TO_FLOAT(floordiff);
 			shadowscale = FIXED_TO_FLOAT(FixedMul(FRACUNIT - floordiff/640, casterinterp.scale));
diff --git a/src/k_bot.c b/src/k_bot.c
index e6604d338..56b9a8c1f 100644
--- a/src/k_bot.c
+++ b/src/k_bot.c
@@ -1397,7 +1397,10 @@ void K_BuildBotTiccmd(player_t *player, ticcmd_t *cmd)
 					}
 				}
 
-				turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+				if (predict != NULL)
+				{
+					turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+				}
 				cmd->buttons &= ~(BT_ACCELERATE|BT_BRAKE);
 				cmd->forwardmove = 0;
 				trySpindash = true;
@@ -1431,7 +1434,10 @@ void K_BuildBotTiccmd(player_t *player, ticcmd_t *cmd)
 				}
 			}
 
-			turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+			if (predict != NULL)
+			{
+				turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+			}
 		}
 	}
 	else
@@ -1450,7 +1456,10 @@ void K_BuildBotTiccmd(player_t *player, ticcmd_t *cmd)
 			}
 		}
 
-		turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+		if (predict != NULL)
+		{
+			turnamt = K_HandleBotTrack(player, cmd, predict, destangle);
+		}
 	}
 
 	if (trySpindash == true)
diff --git a/src/menus/transient/level-select.c b/src/menus/transient/level-select.c
index 3ccbd7a7e..b4cf228cf 100644
--- a/src/menus/transient/level-select.c
+++ b/src/menus/transient/level-select.c
@@ -251,7 +251,7 @@ boolean M_LevelListFromGametype(INT16 gt)
 		if (cupgrid.cappages == 0)
 		{
 			cupgrid.cappages = 2;
-			cupgrid.builtgrid = Z_Calloc(
+			cupgrid.builtgrid = Z_Malloc(
 				cupgrid.cappages * pagelen,
 				PU_STATIC,
 				NULL);
@@ -288,7 +288,6 @@ boolean M_LevelListFromGametype(INT16 gt)
 					I_Error("M_LevelListFromGametype: Not enough memory to reallocate builtgrid");
 				}
 
-				memset(cupgrid.builtgrid + firstlen, 0, firstlen);
 				cupgrid.cappages *= 2;
 			}
 
diff --git a/src/p_floor.c b/src/p_floor.c
index a81287102..2d25e8208 100644
--- a/src/p_floor.c
+++ b/src/p_floor.c
@@ -591,7 +591,6 @@ void T_BounceCheese(bouncecheese_t *bouncer)
 	if (bouncer->sector->crumblestate == CRUMBLE_RESTORE || bouncer->sector->crumblestate == CRUMBLE_WAIT
 		|| bouncer->sector->crumblestate == CRUMBLE_ACTIVATED) // Oops! Crumbler says to remove yourself!
 	{
-		bouncer->sector->crumblestate = CRUMBLE_WAIT;
 		bouncer->sector->ceilingdata = NULL;
 		bouncer->sector->ceilspeed = 0;
 		bouncer->sector->floordata = NULL;
@@ -2149,12 +2148,11 @@ void EV_CrumbleChain(sector_t *sec, ffloor_t *rover)
 		}
 	}
 
-#undef controlsec
-
-	// soundorg z height never gets set normally, so MEH.
-	sec->soundorg.z = sec->floorheight;
+	sec->soundorg.z = (controlsec->floorheight + controlsec->ceilingheight)/2;
 	S_StartSound(&sec->soundorg, mobjinfo[type].activesound);
 
+#undef controlsec
+
 	// Find the outermost vertexes in the subsector
 	for (i = 0; i < sec->linecount; i++)
 	{
diff --git a/src/p_inter.c b/src/p_inter.c
index c1bcb5b8e..b6a864a0d 100644
--- a/src/p_inter.c
+++ b/src/p_inter.c
@@ -2337,13 +2337,11 @@ boolean P_DamageMobj(mobj_t *target, mobj_t *inflictor, mobj_t *source, INT32 da
 					break;
 			}
 
-			if (type != DMG_STING && type != DMG_STUMBLE)
+			if (type != DMG_STUMBLE)
 			{
-				player->flashing = K_GetKartFlashing(player);
-			}
+				if (type != DMG_STING)
+					player->flashing = K_GetKartFlashing(player);
 
-			if (ringburst > 0)
-			{
 				P_PlayRinglossSound(target);
 				P_PlayerRingBurst(player, ringburst);
 			}
@@ -2356,7 +2354,7 @@ boolean P_DamageMobj(mobj_t *target, mobj_t *inflictor, mobj_t *source, INT32 da
 			}
 			else
 			{
-				K_DropHnextList(player, false);
+				K_DropHnextList(player, (type != DMG_STUMBLE));
 			}
 
 			if (type != DMG_STUMBLE)
diff --git a/src/p_setup.c b/src/p_setup.c
index 70c386a7a..2d4e2d54d 100644
--- a/src/p_setup.c
+++ b/src/p_setup.c
@@ -4589,7 +4589,7 @@ static void P_ConvertBinaryLinedefTypes(void)
 			//Flags
 			if (lines[i].flags & ML_BLOCKPLAYERS)
 				lines[i].args[6] |= TMFR_REVERSE;
-			if (lines[i].flags & ML_BLOCKPLAYERS)
+			if (lines[i].flags & ML_NOCLIMB)
 				lines[i].args[6] |= TMFR_SPINDASH;
 
 			lines[i].special = 190;
@@ -6018,7 +6018,9 @@ static void P_ConvertBinarySectorTypes(void)
 			case 8: //Instakill
 				sectors[i].damagetype = SD_INSTAKILL;
 				break;
-			case 9: // Stumble
+			//case 9: -- Ring Drainer (Floor Touch)
+			//case 10: -- Ring Drainer (No Floor Touch)
+			case 11: // Stumble
 				sectors[i].damagetype = SD_STUMBLE;
 				break;
 			case 12: //Wall sector
diff --git a/src/p_slopes.c b/src/p_slopes.c
index 5b4ead3e3..4a4e84332 100644
--- a/src/p_slopes.c
+++ b/src/p_slopes.c
@@ -201,10 +201,14 @@ void P_ReconfigureViaVertexes (pslope_t *slope, const vector3_t v1, const vector
 static void ReconfigureViaConstants (pslope_t *slope, const fixed_t a, const fixed_t b, const fixed_t c, const fixed_t d)
 {
 	fixed_t m;
+	fixed_t o = 0;
 	vector3_t *normal = &slope->normal;
 
+	if (c)
+		o = abs(c) <= FRACUNIT ? -FixedMul(d, FixedDiv(FRACUNIT, c)) : -FixedDiv(d, c);
+
 	// Set origin.
-	FV3_Load(&slope->o, 0, 0, c ? -FixedDiv(d, c) : 0);
+	FV3_Load(&slope->o, 0, 0, o);
 
 	// Get slope's normal.
 	FV3_Load(normal, a, b, c);
diff --git a/src/p_spec.c b/src/p_spec.c
index 4438401a6..40501ff62 100644
--- a/src/p_spec.c
+++ b/src/p_spec.c
@@ -1608,7 +1608,7 @@ boolean P_RunTriggerLinedef(line_t *triggerline, mobj_t *actor, sector_t *caller
 
 	// "Trigger on X calls" linedefs reset if args[2] is set
 	if (specialtype == 321 && triggerline->args[2])
-		triggerline->callcount = triggerline->args[3];
+		triggerline->callcount = triggerline->args[1];
 	else
 	{
 		// These special types work only once
diff --git a/src/screen.c b/src/screen.c
index f1b53a7f2..9b1036d7c 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -675,7 +675,13 @@ void SCR_ClosedCaptions(void)
 		y = basey-((i + 2)*10);
 
 		if (closedcaptions[i].b)
-			y -= (closedcaptions[i].b--)*vid.dupy;
+		{
+			y -= closedcaptions[i].b * vid.dupy;
+			if (renderisnewtic)
+			{
+				closedcaptions[i].b--;
+			}
+		}
 
 		if (closedcaptions[i].t < CAPTIONFADETICS)
 			flags |= (((CAPTIONFADETICS-closedcaptions[i].t)/2)*V_10TRANS);
diff --git a/thirdparty/CMakeLists.txt b/thirdparty/CMakeLists.txt
index 3a37bae85..479fd26a9 100644
--- a/thirdparty/CMakeLists.txt
+++ b/thirdparty/CMakeLists.txt
@@ -22,86 +22,7 @@ include("cpm-discordrpc.cmake")
 include("cpm-xmp-lite.cmake")
 include("cpm-fmt.cmake")
 include("cpm-imgui.cmake")
-
-if(NOT "${SRB2_CONFIG_SYSTEM_LIBRARIES}")
-	CPMAddPackage(
-		NAME acsvm
-		VERSION 0
-		URL "https://github.com/DavidPH/ACSVM/archive/7011af443dd03e8592d7810b0b91f46c49bdde59.zip"
-		EXCLUDE_FROM_ALL ON
-		DOWNLOAD_ONLY YES
-	)
-
-	if(acsvm_ADDED)
-		# Sal -- While ACSVM can be built as a shared library, a lot of its options are
-		# tied to directories existing, because the project suggests just copying it into
-		# your own project directly. I don't want us to do that, so I made our own target.
-		set(
-			acsvm_SOURCES
-
-			ACSVM/Action.cpp
-			ACSVM/Action.hpp
-			ACSVM/Array.cpp
-			ACSVM/Array.hpp
-			ACSVM/BinaryIO.cpp
-			ACSVM/BinaryIO.hpp
-			ACSVM/CallFunc.cpp
-			ACSVM/CallFunc.hpp
-			ACSVM/Code.hpp
-			ACSVM/CodeData.cpp
-			ACSVM/CodeData.hpp
-			ACSVM/CodeList.hpp
-			ACSVM/Environment.cpp
-			ACSVM/Environment.hpp
-			ACSVM/Error.cpp
-			ACSVM/Error.hpp
-			ACSVM/Function.cpp
-			ACSVM/Function.hpp
-			ACSVM/HashMap.hpp
-			ACSVM/HashMapFixed.hpp
-			ACSVM/ID.hpp
-			ACSVM/Init.cpp
-			ACSVM/Init.hpp
-			ACSVM/Jump.cpp
-			ACSVM/Jump.hpp
-			ACSVM/Module.cpp
-			ACSVM/Module.hpp
-			ACSVM/ModuleACS0.cpp
-			ACSVM/ModuleACSE.cpp
-			ACSVM/PrintBuf.cpp
-			ACSVM/PrintBuf.hpp
-			ACSVM/Scope.cpp
-			ACSVM/Scope.hpp
-			ACSVM/Script.cpp
-			ACSVM/Script.hpp
-			ACSVM/Serial.cpp
-			ACSVM/Serial.hpp
-			ACSVM/Stack.hpp
-			ACSVM/Store.hpp
-			ACSVM/String.cpp
-			ACSVM/String.hpp
-			ACSVM/Thread.cpp
-			ACSVM/Thread.hpp
-			ACSVM/ThreadExec.cpp
-			ACSVM/Tracer.cpp
-			ACSVM/Tracer.hpp
-			ACSVM/Types.hpp
-			ACSVM/Vector.hpp
-
-			Util/Floats.cpp
-			Util/Floats.hpp
-		)
-		list(TRANSFORM acsvm_SOURCES PREPEND "${acsvm_SOURCE_DIR}/")
-		add_library(acsvm "${SRB2_INTERNAL_LIBRARY_TYPE}" ${acsvm_SOURCES})
-
-		target_compile_features(acsvm PRIVATE cxx_std_11)
-
-		target_include_directories(acsvm INTERFACE "${acsvm_SOURCE_DIR}")
-
-		target_link_libraries(acsvm PRIVATE acsvm::acsvm)
-		add_library(acsvm::acsvm ALIAS acsvm)
-	endif()
-endif()
+include("cpm-acsvm.cmake")
 
 add_subdirectory(tcbrindle_span)
 add_subdirectory(stb_vorbis)
diff --git a/thirdparty/cpm-acsvm.cmake b/thirdparty/cpm-acsvm.cmake
new file mode 100644
index 000000000..2318050bb
--- /dev/null
+++ b/thirdparty/cpm-acsvm.cmake
@@ -0,0 +1,77 @@
+CPMAddPackage(
+	NAME acsvm
+	VERSION 0
+	URL "https://github.com/DavidPH/ACSVM/archive/7011af443dd03e8592d7810b0b91f46c49bdde59.zip"
+	EXCLUDE_FROM_ALL ON
+	DOWNLOAD_ONLY YES
+)
+
+if(acsvm_ADDED)
+	# Sal -- While ACSVM can be built as a shared library, a lot of its options are
+	# tied to directories existing, because the project suggests just copying it into
+	# your own project directly. I don't want us to do that, so I made our own target.
+	set(
+		acsvm_SOURCES
+
+		ACSVM/Action.cpp
+		ACSVM/Action.hpp
+		ACSVM/Array.cpp
+		ACSVM/Array.hpp
+		ACSVM/BinaryIO.cpp
+		ACSVM/BinaryIO.hpp
+		ACSVM/CallFunc.cpp
+		ACSVM/CallFunc.hpp
+		ACSVM/Code.hpp
+		ACSVM/CodeData.cpp
+		ACSVM/CodeData.hpp
+		ACSVM/CodeList.hpp
+		ACSVM/Environment.cpp
+		ACSVM/Environment.hpp
+		ACSVM/Error.cpp
+		ACSVM/Error.hpp
+		ACSVM/Function.cpp
+		ACSVM/Function.hpp
+		ACSVM/HashMap.hpp
+		ACSVM/HashMapFixed.hpp
+		ACSVM/ID.hpp
+		ACSVM/Init.cpp
+		ACSVM/Init.hpp
+		ACSVM/Jump.cpp
+		ACSVM/Jump.hpp
+		ACSVM/Module.cpp
+		ACSVM/Module.hpp
+		ACSVM/ModuleACS0.cpp
+		ACSVM/ModuleACSE.cpp
+		ACSVM/PrintBuf.cpp
+		ACSVM/PrintBuf.hpp
+		ACSVM/Scope.cpp
+		ACSVM/Scope.hpp
+		ACSVM/Script.cpp
+		ACSVM/Script.hpp
+		ACSVM/Serial.cpp
+		ACSVM/Serial.hpp
+		ACSVM/Stack.hpp
+		ACSVM/Store.hpp
+		ACSVM/String.cpp
+		ACSVM/String.hpp
+		ACSVM/Thread.cpp
+		ACSVM/Thread.hpp
+		ACSVM/ThreadExec.cpp
+		ACSVM/Tracer.cpp
+		ACSVM/Tracer.hpp
+		ACSVM/Types.hpp
+		ACSVM/Vector.hpp
+
+		Util/Floats.cpp
+		Util/Floats.hpp
+	)
+	list(TRANSFORM acsvm_SOURCES PREPEND "${acsvm_SOURCE_DIR}/")
+	add_library(acsvm "${SRB2_INTERNAL_LIBRARY_TYPE}" ${acsvm_SOURCES})
+
+	target_compile_features(acsvm PRIVATE cxx_std_11)
+
+	target_include_directories(acsvm INTERFACE "${acsvm_SOURCE_DIR}")
+
+	target_link_libraries(acsvm PRIVATE acsvm::acsvm)
+	add_library(acsvm::acsvm ALIAS acsvm)
+endif()