diff --git a/src/d_clisrv.c b/src/d_clisrv.c
index d20c0e5ea..7852a0a22 100644
--- a/src/d_clisrv.c
+++ b/src/d_clisrv.c
@@ -517,9 +517,9 @@ static inline void resynch_write_player(resynch_pak *rsp, const size_t i)
 	rsp->thokitem = (UINT32)LONG(players[i].thokitem); //mobjtype_t
 	rsp->spinitem = (UINT32)LONG(players[i].spinitem); //mobjtype_t
 	rsp->revitem = (UINT32)LONG(players[i].revitem); //mobjtype_t
-	rsp->actionspd = LONG(players[i].actionspd);
-	rsp->mindash = LONG(players[i].mindash);
-	rsp->maxdash = LONG(players[i].maxdash);
+	rsp->actionspd = (fixed_t)LONG(players[i].actionspd);
+	rsp->mindash = (fixed_t)LONG(players[i].mindash);
+	rsp->maxdash = (fixed_t)LONG(players[i].maxdash);
 	rsp->jumpfactor = (fixed_t)LONG(players[i].jumpfactor);
 
 	rsp->speed = (fixed_t)LONG(players[i].speed);
@@ -531,6 +531,7 @@ static inline void resynch_write_player(resynch_pak *rsp, const size_t i)
 	rsp->deadtimer = players[i].deadtimer;
 	rsp->exiting = (tic_t)LONG(players[i].exiting);
 	rsp->homing = players[i].homing;
+	rsp->skidtime = (tic_t)LONG(players[i].skidtime);
 	rsp->cmomx = (fixed_t)LONG(players[i].cmomx);
 	rsp->cmomy = (fixed_t)LONG(players[i].cmomy);
 	rsp->rmomx = (fixed_t)LONG(players[i].rmomx);
@@ -590,7 +591,7 @@ static inline void resynch_write_player(resynch_pak *rsp, const size_t i)
 
 	rsp->tics = LONG(players[i].mo->tics);
 	rsp->statenum = (statenum_t)LONG(players[i].mo->state-states); // :(
-	rsp->eflags = (UINT32)LONG(players[i].mo->eflags);
+	rsp->eflags = (UINT16)SHORT(players[i].mo->eflags);
 	rsp->flags = LONG(players[i].mo->flags);
 	rsp->flags2 = LONG(players[i].mo->flags2);
 
@@ -642,9 +643,9 @@ static void resynch_read_player(resynch_pak *rsp)
 	players[i].thokitem = (UINT32)LONG(rsp->thokitem); //mobjtype_t
 	players[i].spinitem = (UINT32)LONG(rsp->spinitem); //mobjtype_t
 	players[i].revitem = (UINT32)LONG(rsp->revitem); //mobjtype_t
-	players[i].actionspd = LONG(rsp->actionspd);
-	players[i].mindash = LONG(rsp->mindash);
-	players[i].maxdash = LONG(rsp->maxdash);
+	players[i].actionspd = (fixed_t)LONG(rsp->actionspd);
+	players[i].mindash = (fixed_t)LONG(rsp->mindash);
+	players[i].maxdash = (fixed_t)LONG(rsp->maxdash);
 	players[i].jumpfactor = (fixed_t)LONG(rsp->jumpfactor);
 
 	players[i].speed = (fixed_t)LONG(rsp->speed);
@@ -656,6 +657,7 @@ static void resynch_read_player(resynch_pak *rsp)
 	players[i].deadtimer = rsp->deadtimer;
 	players[i].exiting = (tic_t)LONG(rsp->exiting);
 	players[i].homing = rsp->homing;
+	players[i].skidtime = (tic_t)LONG(rsp->skidtime);
 	players[i].cmomx = (fixed_t)LONG(rsp->cmomx);
 	players[i].cmomy = (fixed_t)LONG(rsp->cmomy);
 	players[i].rmomx = (fixed_t)LONG(rsp->rmomx);
@@ -713,7 +715,7 @@ static void resynch_read_player(resynch_pak *rsp)
 	//At this point, the player should have a body, whether they were respawned or not.
 	P_UnsetThingPosition(players[i].mo);
 	players[i].mo->angle = (angle_t)LONG(rsp->angle);
-	players[i].mo->eflags = (UINT32)LONG(rsp->eflags);
+	players[i].mo->eflags = (UINT16)SHORT(rsp->eflags);
 	players[i].mo->flags = LONG(rsp->flags);
 	players[i].mo->flags2 = LONG(rsp->flags2);
 	players[i].mo->friction = LONG(rsp->friction);
diff --git a/src/d_clisrv.h b/src/d_clisrv.h
index 6bc06f13a..246447ed6 100644
--- a/src/d_clisrv.h
+++ b/src/d_clisrv.h
@@ -177,9 +177,9 @@ typedef struct
 	UINT32 thokitem; //mobjtype_t
 	UINT32 spinitem; //mobjtype_t
 	UINT32 revitem; //mobjtype_t
-	INT32 actionspd;
-	INT32 mindash;
-	INT32 maxdash;
+	fixed_t actionspd;
+	fixed_t mindash;
+	fixed_t maxdash;
 	fixed_t jumpfactor;
 
 	fixed_t speed;
@@ -191,6 +191,7 @@ typedef struct
 	INT32 deadtimer;
 	tic_t exiting;
 	UINT8 homing;
+	tic_t skidtime;
 	fixed_t cmomx;
 	fixed_t cmomy;
 	fixed_t rmomx;
@@ -241,11 +242,11 @@ typedef struct
 	fixed_t friction;
 	fixed_t movefactor;
 
-	INT16 tics;
+	INT32 tics;
 	statenum_t statenum;
 	UINT32 flags;
 	UINT32 flags2;
-	UINT8 eflags;
+	UINT16 eflags;
 
 	fixed_t radius;
 	fixed_t height;
diff --git a/src/lua_mathlib.c b/src/lua_mathlib.c
index fd00180d5..a55e3a0e4 100644
--- a/src/lua_mathlib.c
+++ b/src/lua_mathlib.c
@@ -100,7 +100,11 @@ static int lib_fixedint(lua_State *L)
 
 static int lib_fixeddiv(lua_State *L)
 {
-	lua_pushfixed(L, FixedDiv(luaL_checkfixed(L, 1), luaL_checkfixed(L, 2)));
+	fixed_t i = luaL_checkfixed(L, 1);
+	fixed_t j = luaL_checkfixed(L, 2);
+	if (j == 0)
+		return luaL_error(L, "divide by zero");
+	lua_pushfixed(L, FixedDiv(i, j));
 	return 1;
 }
 
@@ -112,7 +116,10 @@ static int lib_fixedrem(lua_State *L)
 
 static int lib_fixedsqrt(lua_State *L)
 {
-	lua_pushfixed(L, FixedSqrt(luaL_checkfixed(L, 1)));
+	fixed_t i = luaL_checkfixed(L, 1);
+	if (i < 0)
+		return luaL_error(L, "square root domain error");
+	lua_pushfixed(L, FixedSqrt(i));
 	return 1;
 }
 
diff --git a/src/p_saveg.c b/src/p_saveg.c
index e0112bb79..952e567d7 100644
--- a/src/p_saveg.c
+++ b/src/p_saveg.c
@@ -613,7 +613,7 @@ static void P_NetArchiveWorld(void)
 						WRITEUINT16(put, j); // save ffloor "number"
 						WRITEUINT8(put, fflr_diff);
 						if (fflr_diff & 1)
-							WRITEUINT16(put, rover->flags);
+							WRITEUINT32(put, rover->flags);
 						if (fflr_diff & 2)
 							WRITEINT16(put, rover->alpha);
 					}
@@ -815,7 +815,7 @@ static void P_NetUnArchiveWorld(void)
 				fflr_diff = READUINT8(get);
 
 				if (fflr_diff & 1)
-					rover->flags = READUINT16(get);
+					rover->flags = READUINT32(get);
 				if (fflr_diff & 2)
 					rover->alpha = READINT16(get);
 
diff --git a/src/r_segs.c b/src/r_segs.c
index 0e2b9ea5c..bac90eb16 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -1421,7 +1421,7 @@ static void R_RenderSegLoop (void)
 			for (i = 0; i < dc_numlights; i++)
 			{
 				dc_lightlist[i].height += dc_lightlist[i].heightstep;
-				if (dc_lightlist[i].flags & FF_SOLID)
+				if (dc_lightlist[i].flags & FF_CUTSOLIDS)
 					dc_lightlist[i].botheight += dc_lightlist[i].botheightstep;
 			}
 		}
@@ -2508,7 +2508,7 @@ void R_StoreWallRange(INT32 start, INT32 stop)
 #endif
 			rlight->flags = light->flags;
 
-			if (light->caster && light->caster->flags & FF_SOLID)
+			if (light->caster && light->caster->flags & FF_CUTSOLIDS)
 			{
 #ifdef ESLOPE
 				if (*light->caster->b_slope) {
diff --git a/src/r_things.c b/src/r_things.c
index 5616c2224..2ec2f6ead 100644
--- a/src/r_things.c
+++ b/src/r_things.c
@@ -964,7 +964,7 @@ static void R_SplitSprite(vissprite_t *sprite, mobj_t *thing)
 		cutfrac = (INT16)((centeryfrac - FixedMul(testheight - viewz, sprite->scale))>>FRACBITS);
 		if (cutfrac < 0)
 			continue;
-		if (cutfrac > vid.height)
+		if (cutfrac > viewheight)
 			return;
 
 		// Found a split! Make a new sprite, copy the old sprite to it, and