diff --git a/src/dsectoreffect.cpp b/src/dsectoreffect.cpp
index b55e8113f..dff75e848 100644
--- a/src/dsectoreffect.cpp
+++ b/src/dsectoreffect.cpp
@@ -61,6 +61,7 @@ void DSectorEffect::Destroy()
 }
 
 DSectorEffect::DSectorEffect (sector_t *sector)
+	: DThinker(STAT_SECTOREFFECT)
 {
 	m_Sector = sector;
 }
diff --git a/src/g_level.cpp b/src/g_level.cpp
index dcf97ba4f..90b31138d 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -1207,29 +1207,23 @@ void G_FinishTravel ()
 		pnum = int(pawn->player - players);
 		pawn->ChangeStatNum (STAT_PLAYER);
 		pawndup = pawn->player->mo;
-		start = NULL;
 		assert (pawn != pawndup);
-		if (pawndup == NULL)
-		{ // Oh no! there was no start for this player!
-			start = G_PickPlayerStart(pnum, PPS_FORCERANDOM); 
-			if (start != NULL) pawndup = P_SpawnPlayer(start, pnum, (level.flags2 & LEVEL2_PRERAISEWEAPON) ? SPF_WEAPONFULLYUP : 0);
-			if (pawndup == NULL)
-			{
-				pawn->flags |= MF_NOSECTOR | MF_NOBLOCKMAP;
-				pawn->Destroy();
-				continue;
-			}
-		}
 
+		start = G_PickPlayerStart(pnum, 0);
 		if (start == NULL)
 		{
-			start = G_PickPlayerStart(pnum, 0);
-			if (start == NULL)
+			if (pawndup != nullptr)
 			{
 				Printf(TEXTCOLOR_RED "No player %d start to travel to!\n", pnum + 1);
 				// Move to the coordinates this player had when they left the level.
 				pawn->SetXYZ(pawndup->Pos());
 			}
+			else
+			{
+				// Could not find a start for this player at all. This really should never happen but if it does, let's better abort.
+				DThinker::DestroyThinkersInList(STAT_TRAVELLING);
+				I_Error ("No player %d start to travel to!\n", pnum + 1);
+			}
 		}
 		oldpawn = pawndup;
 
@@ -1266,8 +1260,11 @@ void G_FinishTravel ()
 		pawn->player->camera = pawn;
 		pawn->player->viewheight = pawn->ViewHeight;
 		pawn->flags2 &= ~MF2_BLASTED;
-		DObject::StaticPointerSubstitution (oldpawn, pawn);
-		oldpawn->Destroy();
+		if (oldpawn != nullptr)
+		{
+			DObject::StaticPointerSubstitution (oldpawn, pawn);
+			oldpawn->Destroy();
+		}
 		if (pawndup != NULL)
 		{
 			pawndup->Destroy();
diff --git a/src/m_swap.h b/src/m_swap.h
index fc1ba9cc4..230e95598 100644
--- a/src/m_swap.h
+++ b/src/m_swap.h
@@ -47,6 +47,11 @@ inline short LittleShort(int x)
 	return OSSwapLittleToHostInt16((uint16_t)x);
 }
 
+inline unsigned short LittleShort(unsigned int x)
+{
+	return OSSwapLittleToHostInt16((uint16_t)x);
+}
+
 inline int LittleLong(int x)
 {
 	return OSSwapLittleToHostInt32((uint32_t)x);
@@ -57,6 +62,16 @@ inline unsigned int LittleLong(unsigned int x)
 	return OSSwapLittleToHostInt32(x);
 }
 
+inline int LittleLong(long x)
+{
+	return OSSwapLittleToHostInt32((uint32_t)x);
+}
+
+inline unsigned int LittleLong(unsigned long x)
+{
+	return OSSwapLittleToHostInt32((uint32_t)x);
+}
+
 inline short BigShort(short x)
 {
 	return (short)OSSwapBigToHostInt16((uint16_t)x);
diff --git a/src/p_mobj.cpp b/src/p_mobj.cpp
index ece959b80..9ee6358f6 100644
--- a/src/p_mobj.cpp
+++ b/src/p_mobj.cpp
@@ -71,6 +71,7 @@
 #include "p_spec.h"
 #include "p_checkposition.h"
 #include "serializer.h"
+#include "r_utility.h"
 
 // MACROS ------------------------------------------------------------------
 
@@ -1041,11 +1042,11 @@ bool AActor::IsInsideVisibleAngles() const
 	if (players[consoleplayer].camera == nullptr)
 		return true;
 	
-	DAngle anglestart = VisibleStartAngle.Normalized180();
-	DAngle angleend = VisibleEndAngle.Normalized180();
-	DAngle pitchstart = VisibleStartPitch.Normalized180();
-	DAngle pitchend = VisibleEndPitch.Normalized180();
-
+	DAngle anglestart = VisibleStartAngle;
+	DAngle angleend = VisibleEndAngle;
+	DAngle pitchstart = VisibleStartPitch;
+	DAngle pitchend = VisibleEndPitch;
+	
 	if (anglestart > angleend)
 	{
 		DAngle temp = anglestart;
@@ -1053,28 +1054,26 @@ bool AActor::IsInsideVisibleAngles() const
 		angleend = temp;
 	}
 
-	if (pitchstart > angleend)
+	if (pitchstart > pitchend)
 	{
 		DAngle temp = pitchstart;
 		pitchstart = pitchend;
 		pitchend = temp;
 	}
+	
 
-	player_t* pPlayer = players[consoleplayer].camera->player;
+	AActor *mo = players[consoleplayer].camera;
 
-	if (pPlayer && pPlayer->mo)
+	if (mo != nullptr)
 	{
-		AActor *mo = pPlayer->mo;
-		DVector3 diffang = Vec3To(mo);
+		
+		DVector3 diffang = ViewPos - Pos();
 		DAngle to = diffang.Angle();
 
 		if (!(renderflags & RF_ABSMASKANGLE)) 
 			to = deltaangle(Angles.Yaw, to);
 
-		// Note that this check is inversed due to only being able to vectorize
-		// from one way (this actor to the player). It still means to pass
-		// if the player is within the visible angles.
-		if ((to <= anglestart || to >= angleend))
+		if ((to >= anglestart && to <= angleend))
 		{
 			to = diffang.Pitch();
 			if (!(renderflags & RF_ABSMASKPITCH))
diff --git a/src/p_saveg.cpp b/src/p_saveg.cpp
index 170273b43..24e5ff9ee 100644
--- a/src/p_saveg.cpp
+++ b/src/p_saveg.cpp
@@ -642,6 +642,11 @@ static void ReadOnePlayer(FSerializer &arc, bool skipload)
 					{
 						CopyPlayer(&players[i], &playerTemp, name);
 					}
+					else
+					{
+						// we need the player actor, so that G_FinishTravel can destroy it later.
+						players[i].mo = playerTemp.mo;
+					}
 				}
 				else
 				{
@@ -755,6 +760,13 @@ static void ReadMultiplePlayers(FSerializer &arc, int numPlayers, int numPlayers
 			}
 		}
 	}
+	else
+	{
+		for (i = 0; i < MAXPLAYERS; ++i)
+		{
+			players[i].mo = playertemp[i].mo;
+		}
+	}
 
 	delete[] tempPlayerUsed;
 	delete[] playertemp;
diff --git a/src/serializer.cpp b/src/serializer.cpp
index a23459ced..445a3b22b 100644
--- a/src/serializer.cpp
+++ b/src/serializer.cpp
@@ -1294,7 +1294,7 @@ FSerializer &SerializePointer(FSerializer &arc, const char *key, T *&value, T **
 	assert(base != nullptr);
 	if (arc.isReading() || !arc.w->inObject() || defval == nullptr || value != *defval)
 	{
-		ptrdiff_t vv = value == nullptr ? -1 : value - base;
+		int64_t vv = value == nullptr ? -1 : value - base;
 		Serialize(arc, key, vv, nullptr);
 		value = vv < 0 ? nullptr : base + vv;
 	}
diff --git a/src/thingdef/thingdef_properties.cpp b/src/thingdef/thingdef_properties.cpp
index 8ada05aa6..927e3e537 100644
--- a/src/thingdef/thingdef_properties.cpp
+++ b/src/thingdef/thingdef_properties.cpp
@@ -1437,7 +1437,7 @@ DEFINE_PROPERTY(spriterotation, F, Actor)
 DEFINE_PROPERTY(visibleangles, Ff, Actor)
 {
 	PROP_DOUBLE_PARM(visstart, 0);
-	PROP_DOUBLE_PARM(visend, 0);
+	PROP_DOUBLE_PARM(visend, 1);
 	defaults->VisibleStartAngle = visstart;
 	defaults->VisibleEndAngle = visend;
 }
@@ -1448,7 +1448,7 @@ DEFINE_PROPERTY(visibleangles, Ff, Actor)
 DEFINE_PROPERTY(visiblepitch, Ff, Actor)
 {
 	PROP_DOUBLE_PARM(visstart, 0);
-	PROP_DOUBLE_PARM(visend, 0);
+	PROP_DOUBLE_PARM(visend, 1);
 	defaults->VisibleStartPitch = visstart;
 	defaults->VisibleEndPitch = visend;
 }