diff --git a/CMakeLists.txt b/CMakeLists.txt
index 64e850e932..c09f0dbd94 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -228,6 +228,12 @@ endif( GME_FOUND AND NOT FORCE_INTERNAL_GME )
 
 set( LZMA_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/lzma/C" )
 
+if( NOT CMAKE_CROSSCOMPILING )
+	if( NOT CROSS_EXPORTS )
+		set( CROSS_EXPORTS "" )
+	endif( NOT CROSS_EXPORTS )
+endif( NOT CMAKE_CROSSCOMPILING )
+
 add_subdirectory( lzma )
 add_subdirectory( tools )
 add_subdirectory( dumb )
diff --git a/gdtoa/CMakeLists.txt b/gdtoa/CMakeLists.txt
index 7f394e1403..9ec7c2f610 100644
--- a/gdtoa/CMakeLists.txt
+++ b/gdtoa/CMakeLists.txt
@@ -34,7 +34,7 @@ if( NOT MSVC AND NOT APPLE )
 		DEPENDS qnan )
 		
 	set( GEN_FP_FILES arith.h gd_qnan.h )
-	set( GEN_FP_DEPS ${CMAKE_CURRENT_BINARY_DIR}/arith.h ${CMAKE_CURRENTY_BINARY_DIR}/gd_qnan.h )
+	set( GEN_FP_DEPS ${CMAKE_CURRENT_BINARY_DIR}/arith.h ${CMAKE_CURRENT_BINARY_DIR}/gd_qnan.h )
 endif( NOT MSVC AND NOT APPLE )
 
 add_library( gdtoa
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index efbeab3b55..22fd833b45 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -643,12 +643,13 @@ else( WIN32 )
 	endif( APPLE )
 endif( WIN32 )
 
+if( NOT ASM_SOURCES )
+	set( ASM_SOURCES "" )
+endif( NOT ASM_SOURCES )
+
 if( NO_ASM )
 	add_definitions( -DNOASM )
 else( NO_ASM )
-	if( NOT ASM_SOURCES )
-		set( ASM_SOURCES "" )
-	endif( NOT ASM_SOURCES )
 	if( X64 )
 		ADD_ASM_FILE( asm_x86_64 tmap3 )
 	else( X64 )
diff --git a/src/fragglescript/t_func.cpp b/src/fragglescript/t_func.cpp
index 2513a68a82..32d4909d49 100644
--- a/src/fragglescript/t_func.cpp
+++ b/src/fragglescript/t_func.cpp
@@ -3530,8 +3530,17 @@ void FParser::SF_MapThingNumExist()
 		}
 		else
 		{
+			// Inventory items in the player's inventory have to be considered non-present.
+			if (SpawnedThings[intval]->IsKindOf(RUNTIME_CLASS(AInventory)) && 
+				barrier_cast<AInventory*>(SpawnedThings[intval])->Owner != NULL)
+			{
+				t_return.value.i = 0;
+			}
+			else
+			{
+				t_return.value.i = 1;
+			}
 			t_return.type = svt_int;
-			t_return.value.i = 1;
 		}
 	}
 }
@@ -3770,11 +3779,14 @@ void FParser::SF_ObjType()
 		mo = Script->trigger;
 	}
 
-	for(unsigned int i=0;i<countof(ActorTypes);i++) if (mo->GetClass() == ActorTypes[i])
+	if (mo != NULL)
 	{
-		t_return.type = svt_int;
-		t_return.value.i = i;
-		return;
+		for (unsigned int i = 0; i < countof(ActorTypes); i++) if (mo->GetClass() == ActorTypes[i])
+		{
+			t_return.type = svt_int;
+			t_return.value.i = i;
+			return;
+		}
 	}
 	t_return.type = svt_int;
 	t_return.value.i = -1;
diff --git a/src/hu_stuff.h b/src/hu_stuff.h
index e2cc75918a..dc22a2adcc 100644
--- a/src/hu_stuff.h
+++ b/src/hu_stuff.h
@@ -21,6 +21,8 @@
 #ifndef __HU_STUFF_H__
 #define __HU_STUFF_H__
 
+#include "doomtype.h"
+
 struct event_t;
 class player_t;
 
@@ -52,7 +54,7 @@ int HU_GetRowColor(player_t *player, bool hightlight);
 
 // Sorting routines
 
-int comparepoints(const void *arg1, const void *arg2);
-int compareteams(const void *arg1, const void *arg2);
+int STACK_ARGS comparepoints(const void *arg1, const void *arg2);
+int STACK_ARGS compareteams(const void *arg1, const void *arg2);
 
 #endif
diff --git a/src/p_3dfloors.cpp b/src/p_3dfloors.cpp
index dce8459bb4..ce6224b538 100644
--- a/src/p_3dfloors.cpp
+++ b/src/p_3dfloors.cpp
@@ -227,11 +227,11 @@ static int P_Set3DFloor(line_t * line, int param, int param2, int alpha)
 		if (param==0)
 		{
 			flags=FF_EXISTS|FF_RENDERALL|FF_SOLID|FF_INVERTSECTOR;
+			alpha = 255;
 			for (i=0;i<sec->linecount;i++)
 			{
 				line_t * l=sec->lines[i];
 
-				alpha=255;
 				if (l->special==Sector_SetContents && l->frontsector==sec)
 				{
 					alpha=clamp<int>(l->args[1], 0, 100);
@@ -253,12 +253,10 @@ static int P_Set3DFloor(line_t * line, int param, int param2, int alpha)
 
 						l->frontsector->ColorMap = 
 							GetSpecialLights (l->frontsector->ColorMap->Color, 
-											  (unsigned int)(vavoomcolors[l->args[0]]&VC_COLORMASK), 
+											  vavoomcolors[l->args[0]], 
 											  l->frontsector->ColorMap->Desaturate);
-										
-						alpha = (int)((unsigned int)(vavoomcolors[l->args[0]]&VC_ALPHAMASK)>>24);
 					}
-					else alpha=(alpha*255)/100;
+					alpha=(alpha*255)/100;
 					break;
 				}
 			}
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 981870a360..feecbb0aa9 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -5105,7 +5105,7 @@ int DLevelScript::CallFunction(int argCount, int funcIndex, SDWORD *args, const
 
 					while ((source = it.Next()) != NULL)
 					{
-						P_LineAttack(activator, angle, range, pitch, damage, damagetype, pufftype, fhflags);
+						P_LineAttack(source, angle, range, pitch, damage, damagetype, pufftype, fhflags);
 					}
 				}
 			}
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index 72679ef719..076d106eb3 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -314,6 +314,10 @@ void AActor::Serialize (FArchive &arc)
 		arc << PoisonDamageType << PoisonDamageTypeReceived;
 	}
 	arc << ConversationRoot << Conversation;
+	if (SaveVersion >= 4509)
+	{
+		arc << FriendPlayer;
+	}
 
 	{
 		FString tagstr;
diff --git a/src/version.h b/src/version.h
index da8d3b6211..4b309d3d61 100644
--- a/src/version.h
+++ b/src/version.h
@@ -76,7 +76,7 @@ const char *GetVersionString();
 
 // Use 4500 as the base git save version, since it's higher than the
 // SVN revision ever got.
-#define SAVEVER 4508
+#define SAVEVER 4509
 
 #define SAVEVERSTRINGIFY2(x) #x
 #define SAVEVERSTRINGIFY(x) SAVEVERSTRINGIFY2(x)