diff --git a/src/core/config.h b/src/core/config.h
index a2b2b6fc..ce7ee1e3 100644
--- a/src/core/config.h
+++ b/src/core/config.h
@@ -226,11 +226,15 @@ enum Config {
 #	define TIMEBARS		// print debug timers
 #endif
 
-#define FIX_BUGS		// fixes bugs that we've came across during reversing
+#define FIX_BUGS		// fixes bugs that we've came across during reversing. You can undefine this only on release builds.
 #define MORE_LANGUAGES		// Add more translations to the game
 #define COMPATIBLE_SAVES // this allows changing structs while keeping saves compatible
 #define LOAD_INI_SETTINGS // as the name suggests. fundamental for CUSTOM_FRONTEND_OPTIONS
 
+#if defined(__LP64__) || defined(_WIN64)
+#define FIX_BUGS_64 // Must have fixes to be able to run 64 bit build
+#endif
+
 // Just debug menu entries
 #ifdef DEBUGMENU
 #define MISSION_SWITCHER // from debug menu
diff --git a/src/entities/Physical.cpp b/src/entities/Physical.cpp
index 0bd87dbc..24017e19 100644
--- a/src/entities/Physical.cpp
+++ b/src/entities/Physical.cpp
@@ -783,9 +783,13 @@ CPhysical::ApplyCollision(CPhysical *B, CColPoint &colpoint, float &impulseA, fl
 				if(B->GetStatus() == STATUS_PLAYER)
 					pointposB *= 0.8f;
 				if(CWorld::bNoMoreCollisionTorque){
-					// BUG: the game actually uses A here, but this can't be right
+#ifdef FIX_BUGS
 					B->ApplyFrictionMoveForce(fB*-0.3f);
 					B->ApplyFrictionTurnForce(fB*-0.3f, pointposB);
+#else
+					A->ApplyFrictionMoveForce(fB*-0.3f);
+					A->ApplyFrictionTurnForce(fB*-0.3f, pointposB);
+#endif
 				}
 			}
 			if(!A->bInfiniteMass){
@@ -881,7 +885,13 @@ CPhysical::ApplyFriction(CPhysical *B, float adhesiveLimit, CColPoint &colpoint)
 		fOtherSpeedA = vOtherSpeedA.Magnitude();
 		fOtherSpeedB = vOtherSpeedB.Magnitude();
 
+#ifdef FIX_BUGS // division by 0
+		frictionDir = vOtherSpeedA;
+		frictionDir.Normalise();
+#else
 		frictionDir = vOtherSpeedA * (1.0f/fOtherSpeedA);
+#endif
+
 		speedSum = (B->m_fMass*fOtherSpeedB + A->m_fMass*fOtherSpeedA)/(B->m_fMass + A->m_fMass);
 		if(fOtherSpeedA > speedSum){
 			impulseA = (speedSum - fOtherSpeedA) * A->m_fMass;
@@ -911,7 +921,12 @@ CPhysical::ApplyFriction(CPhysical *B, float adhesiveLimit, CColPoint &colpoint)
 		fOtherSpeedA = vOtherSpeedA.Magnitude();
 		fOtherSpeedB = vOtherSpeedB.Magnitude();
 
+#ifdef FIX_BUGS // division by 0
+		frictionDir = vOtherSpeedA;
+		frictionDir.Normalise();
+#else
 		frictionDir = vOtherSpeedA * (1.0f/fOtherSpeedA);
+#endif
 		float massB = B->GetMass(pointposB, frictionDir);
 		speedSum = (massB*fOtherSpeedB + A->m_fMass*fOtherSpeedA)/(massB + A->m_fMass);
 		if(fOtherSpeedA > speedSum){
@@ -939,7 +954,12 @@ CPhysical::ApplyFriction(CPhysical *B, float adhesiveLimit, CColPoint &colpoint)
 		fOtherSpeedA = vOtherSpeedA.Magnitude();
 		fOtherSpeedB = vOtherSpeedB.Magnitude();
 
+#ifdef FIX_BUGS // division by 0
+		frictionDir = vOtherSpeedA;
+		frictionDir.Normalise();
+#else
 		frictionDir = vOtherSpeedA * (1.0f/fOtherSpeedA);
+#endif
 		float massA = A->GetMass(pointposA, frictionDir);
 		speedSum = (B->m_fMass*fOtherSpeedB + massA*fOtherSpeedA)/(B->m_fMass + massA);
 		if(fOtherSpeedA > speedSum){
@@ -967,7 +987,12 @@ CPhysical::ApplyFriction(CPhysical *B, float adhesiveLimit, CColPoint &colpoint)
 		fOtherSpeedA = vOtherSpeedA.Magnitude();
 		fOtherSpeedB = vOtherSpeedB.Magnitude();
 
+#ifdef FIX_BUGS // division by 0
+		frictionDir = vOtherSpeedA;
+		frictionDir.Normalise();
+#else
 		frictionDir = vOtherSpeedA * (1.0f/fOtherSpeedA);
+#endif
 		float massA = A->GetMass(pointposA, frictionDir);
 		float massB = B->GetMass(pointposB, frictionDir);
 		speedSum = (massB*fOtherSpeedB + massA*fOtherSpeedA)/(massB + massA);
@@ -1004,7 +1029,12 @@ CPhysical::ApplyFriction(float adhesiveLimit, CColPoint &colpoint)
 
 		fOtherSpeed = vOtherSpeed.Magnitude();
 		if(fOtherSpeed > 0.0f){
+#ifdef FIX_BUGS // division by 0
+			frictionDir = vOtherSpeed;
+			frictionDir.Normalise();
+#else
 			frictionDir = vOtherSpeed * (1.0f/fOtherSpeed);
+#endif
 			// not really impulse but speed
 			// maybe use ApplyFrictionMoveForce instead?
 			fImpulse = -fOtherSpeed;
@@ -1022,7 +1052,12 @@ CPhysical::ApplyFriction(float adhesiveLimit, CColPoint &colpoint)
 
 		fOtherSpeed = vOtherSpeed.Magnitude();
 		if(fOtherSpeed > 0.0f){
+#ifdef FIX_BUGS // division by 0
+			frictionDir = vOtherSpeed;
+			frictionDir.Normalise();
+#else
 			frictionDir = vOtherSpeed * (1.0f/fOtherSpeed);
+#endif
 			fImpulse = -fOtherSpeed * m_fMass;
 			impulseLimit = adhesiveLimit*CTimer::GetTimeStep() * 1.5;
 			if(fImpulse < -impulseLimit) fImpulse = -impulseLimit;
diff --git a/src/rw/MemoryMgr.cpp b/src/rw/MemoryMgr.cpp
index e2f6f144..2379692c 100644
--- a/src/rw/MemoryMgr.cpp
+++ b/src/rw/MemoryMgr.cpp
@@ -93,7 +93,7 @@ MemoryMgrFree(void *ptr)
 void *
 RwMallocAlign(RwUInt32 size, RwUInt32 align)
 {
-#ifdef FIX_BUGS
+#if defined (FIX_BUGS) || defined(FIX_BUGS_64)
 	uintptr ptralign = align-1;
 	void *mem = (void *)MemoryMgrMalloc(size + sizeof(uintptr) + ptralign);
 
diff --git a/src/rw/RwHelper.cpp b/src/rw/RwHelper.cpp
index dd356b96..d004656c 100644
--- a/src/rw/RwHelper.cpp
+++ b/src/rw/RwHelper.cpp
@@ -291,7 +291,8 @@ SkinGetBonePositionsToTable(RpClump *clump, RwV3d *boneTable)
 			parent = stack[sp--];
 		else
 			parent = i;
-		assert(parent >= 0 && parent < numBones);
+
+		//assert(parent >= 0 && parent < numBones);
 	}
 }
 
@@ -299,7 +300,7 @@ RpHAnimAnimation*
 HAnimAnimationCreateForHierarchy(RpHAnimHierarchy *hier)
 {
 	int i;
-#ifdef FIX_BUGS
+#if defined FIX_BUGS || defined LIBRW
 	int numNodes = hier->numNodes*2;	// you're supposed to have at least two KFs per node
 #else
 	int numNodes = hier->numNodes;
@@ -313,7 +314,7 @@ HAnimAnimationCreateForHierarchy(RpHAnimHierarchy *hier)
 		frame->q.real = 1.0f;
 		frame->q.imag.x = frame->q.imag.y = frame->q.imag.z = 0.0f;
 		frame->t.x = frame->t.y = frame->t.z = 0.0f;
-#ifdef FIX_BUGS
+#if defined FIX_BUGS || defined LIBRW
 		// times are subtracted and divided giving NaNs
 		// so they can't both be 0
 		frame->time = i/hier->numNodes;
@@ -401,7 +402,7 @@ CameraSize(RwCamera * camera, RwRect * rect,
 			RwRaster           *zRaster;
 
 			// BUG: game just changes camera raster's sizes, but this is a hack
-#ifdef FIX_BUGS
+#if defined FIX_BUGS || defined LIBRW
 			/*
 			 * Destroy rasters...
 			 */
diff --git a/src/text/Text.cpp b/src/text/Text.cpp
index 0c63ced7..fe37d0f1 100644
--- a/src/text/Text.cpp
+++ b/src/text/Text.cpp
@@ -97,7 +97,7 @@ CText::Unload(void)
 wchar*
 CText::Get(const char *key)
 {
-#ifdef FIX_BUGS
+#if defined (FIX_BUGS) || defined(FIX_BUGS_64)
 	return keyArray.Search(key, data.chars);
 #else
 	return keyArray.Search(key);
@@ -201,7 +201,7 @@ CKeyArray::Unload(void)
 void
 CKeyArray::Update(wchar *chars)
 {
-#ifndef FIX_BUGS
+#if !defined(FIX_BUGS) && !defined(FIX_BUGS_64)
 	int i;
 	for(i = 0; i < numEntries; i++)
 		entries[i].value = (wchar*)((uint8*)chars + (uintptr)entries[i].value);
@@ -229,7 +229,7 @@ CKeyArray::BinarySearch(const char *key, CKeyEntry *entries, int16 low, int16 hi
 }
 
 wchar*
-#ifdef FIX_BUGS
+#if defined (FIX_BUGS) || defined(FIX_BUGS_64)
 CKeyArray::Search(const char *key, wchar *data)
 #else
 CKeyArray::Search(const char *key)
@@ -239,7 +239,7 @@ CKeyArray::Search(const char *key)
 	char errstr[25];
 	int i;
 
-#ifdef FIX_BUGS
+#if defined (FIX_BUGS) || defined(FIX_BUGS_64)
 	found = BinarySearch(key, entries, 0, numEntries-1);
 	if(found)
 		return (wchar*)((uint8*)data + found->valueOffset);
diff --git a/src/text/Text.h b/src/text/Text.h
index ed978a8b..ab6d1809 100644
--- a/src/text/Text.h
+++ b/src/text/Text.h
@@ -7,7 +7,7 @@ void TextCopy(wchar *dst, const wchar *src);
 
 struct CKeyEntry
 {
-#ifdef FIX_BUGS
+#if defined(FIX_BUGS) || defined(FIX_BUGS_64)
 	uint32 valueOffset;
 #else
 	wchar *value;
@@ -30,7 +30,7 @@ public:
 	void Unload(void);
 	void Update(wchar *chars);
 	CKeyEntry *BinarySearch(const char *key, CKeyEntry *entries, int16 low, int16 high);
-#ifdef FIX_BUGS
+#if defined (FIX_BUGS) || defined(FIX_BUGS_64)
 	wchar *Search(const char *key, wchar *data);
 #else
 	wchar *Search(const char *key);