diff --git a/engine/client/pr_skelobj.c b/engine/client/pr_skelobj.c
index 1821913df..47b41f9ea 100644
--- a/engine/client/pr_skelobj.c
+++ b/engine/client/pr_skelobj.c
@@ -2390,7 +2390,7 @@ void QCBUILTIN PF_skel_premul_bone (pubprogfuncs_t *prinst, struct globalvars_s
 	Vector4Copy(skelobj->bonematrix+12*boneidx+0, temp[0]);
 	Vector4Copy(skelobj->bonematrix+12*boneidx+4, temp[1]);
 	Vector4Copy(skelobj->bonematrix+12*boneidx+8, temp[2]);
-	R_ConcatTransforms(mult, temp, (float(*)[4])(skelobj->bonematrix+12*boneidx));
+	R_ConcatTransforms((void*)mult, (void*)temp, (float(*)[4])(skelobj->bonematrix+12*boneidx));
 }
 void QCBUILTIN PF_skel_postmul_bone (pubprogfuncs_t *prinst, struct globalvars_s *pr_globals)
 {
@@ -2412,7 +2412,7 @@ void QCBUILTIN PF_skel_postmul_bone (pubprogfuncs_t *prinst, struct globalvars_s
 	Vector4Copy(skelobj->bonematrix+12*boneidx+0, temp[0]);
 	Vector4Copy(skelobj->bonematrix+12*boneidx+4, temp[1]);
 	Vector4Copy(skelobj->bonematrix+12*boneidx+8, temp[2]);
-	R_ConcatTransforms(temp, mult, (float(*)[4])(skelobj->bonematrix+12*boneidx));
+	R_ConcatTransforms((void*)temp, (void*)mult, (float(*)[4])(skelobj->bonematrix+12*boneidx));
 }
 
 //void(float skel, float startbone, float endbone, vector org) skel_mul_bone (FTE_CSQC_SKELETONOBJECTS) (reads v_forward etc)
@@ -2446,7 +2446,7 @@ void QCBUILTIN PF_skel_premul_bones (pubprogfuncs_t *prinst, struct globalvars_s
 		Vector4Copy(skelobj->bonematrix+12*startbone+0, temp[0]);
 		Vector4Copy(skelobj->bonematrix+12*startbone+4, temp[1]);
 		Vector4Copy(skelobj->bonematrix+12*startbone+8, temp[2]);
-		R_ConcatTransforms(mult, temp, (float(*)[4])(skelobj->bonematrix+12*startbone));
+		R_ConcatTransforms((void*)mult, (void*)temp, (float(*)[4])(skelobj->bonematrix+12*startbone));
 
 		startbone++;
 	}
diff --git a/engine/client/r_2d.c b/engine/client/r_2d.c
index c34bdcd14..8217b623e 100644
--- a/engine/client/r_2d.c
+++ b/engine/client/r_2d.c
@@ -1355,7 +1355,7 @@ void R2D_PolyBlend (void)
 			Vector2Set(tcoords[2], points[2][0]/64, points[2][1]/64);
 			Vector2Set(tcoords[3], points[3][0]/64, points[3][1]/64);
 
-			R2D_Image2dQuad((const vec2_t*)points, (const vec2_t*)tcoords, colours, shader_polyblend);
+			R2D_Image2dQuad((const vec2_t*)points, (const vec2_t*)tcoords, (const vec4_t*)colours, shader_polyblend);
 		}
 	}
 
diff --git a/engine/common/com_mesh.c b/engine/common/com_mesh.c
index 554e611cf..e1e214fb6 100644
--- a/engine/common/com_mesh.c
+++ b/engine/common/com_mesh.c
@@ -583,7 +583,7 @@ static const float *Alias_ConvertBoneData(skeltype_t sourcetype, const float *so
 		for (i = 0; i < bonecount; i++)
 		{
 			if (bones[i].parent >= 0)
-				R_ConcatTransforms((void*)(dest + bones[i].parent*12), (const void*)(sourcedata+i*12), (void*)(dest+i*12));
+				R_ConcatTransforms((void*)(dest + bones[i].parent*12), (void*)(sourcedata+i*12), (void*)(dest+i*12));
 			else
 			{
 				Vector4Copy(sourcedata+i*12+0, dest+i*12+0);
@@ -607,7 +607,7 @@ static const float *Alias_ConvertBoneData(skeltype_t sourcetype, const float *so
 		for (i = 0; i < bonecount; i++)
 		{
 			Matrix3x4_Invert_Simple(bones[i].inverse, iim);
-			R_ConcatTransforms((const void*)(sourcedata + i*12), (const void*)iim, (void*)(dest + i*12));
+			R_ConcatTransforms((void*)(sourcedata + i*12), (void*)iim, (void*)(dest + i*12));
 		}
 		sourcedata = dest;
 		sourcetype = SKEL_ABSOLUTE;
@@ -625,7 +625,7 @@ static const float *Alias_ConvertBoneData(skeltype_t sourcetype, const float *so
 			if (bones[i].parent >= 0)
 			{
 				Matrix3x4_Invert_Simple(sourcedata+bones[i].parent*12, ip);
-				R_ConcatTransforms((void*)ip, (const void*)(sourcedata+i*12), (void*)(dest+i*12));
+				R_ConcatTransforms((void*)ip, (void*)(sourcedata+i*12), (void*)(dest+i*12));
 			}
 			else
 			{
@@ -646,7 +646,7 @@ static const float *Alias_ConvertBoneData(skeltype_t sourcetype, const float *so
 	{
 		float *dest = (sourcedata == destbuffer)?destbufferalt:destbuffer;
 		for (i = 0; i < bonecount; i++)
-			R_ConcatTransforms((const void*)(sourcedata + i*12), (void*)(bones[i].inverse), (void*)(dest + i*12));
+			R_ConcatTransforms((void*)(sourcedata + i*12), (void*)(bones[i].inverse), (void*)(dest + i*12));
 		sourcedata = dest;
 		sourcetype = SKEL_INVERSE_ABSOLUTE;
 	}
diff --git a/engine/common/pmove.c b/engine/common/pmove.c
index 16f0385d9..218270757 100644
--- a/engine/common/pmove.c
+++ b/engine/common/pmove.c
@@ -161,7 +161,7 @@ static trace_t	PM_PlayerTracePortals(vec3_t start, vec3_t end, unsigned int soli
 		{
 			vec3_t move;
 			vec3_t from;
-			vec3_t newang, newvel;
+			vec3_t newang, newvel = {0,0,0};
 
 			VectorCopy(trace.endpos, from);	//just in case
 			VectorSubtract(end, trace.endpos, move);
diff --git a/engine/gl/gl_hlmdl.c b/engine/gl/gl_hlmdl.c
index 70cf0dce6..94800c985 100644
--- a/engine/gl/gl_hlmdl.c
+++ b/engine/gl/gl_hlmdl.c
@@ -1020,7 +1020,7 @@ qboolean HLMDL_Trace		(model_t *model, int hulloverride, framestate_t *framestat
 		{
 			/* If we have a parent, take the addition. Otherwise just copy the values */
 			if(hm->bones[b].parent>=0)
-				R_ConcatTransforms(transform_matrix[hm->bones[b].parent], (void*)(relbones+b*12), transform_matrix[b]);
+				R_ConcatTransforms((void*)transform_matrix[hm->bones[b].parent], (void*)(relbones+b*12), transform_matrix[b]);
 			else if (axis)
 				R_ConcatTransformsAxis(axis, (void*)(relbones+b*12), transform_matrix[b]);
 			else
@@ -1174,7 +1174,7 @@ void R_HL_BuildFrame(hlmodel_t *model, hlmdl_submodel_t *amodel, entity_t *curen
 				/* If we have a parent, take the addition. Otherwise just copy the values */
 				if(model->bones[b].parent>=0)
 				{
-					R_ConcatTransforms(transform_matrix[model->bones[b].parent], (void*)(curent->framestate.bonestate+b*12), transform_matrix[b]);
+					R_ConcatTransforms((void*)transform_matrix[model->bones[b].parent], (void*)(curent->framestate.bonestate+b*12), transform_matrix[b]);
 				}
 				else
 				{
@@ -1217,7 +1217,7 @@ void R_HL_BuildFrame(hlmodel_t *model, hlmdl_submodel_t *amodel, entity_t *curen
 			/* If we have a parent, take the addition. Otherwise just copy the values */
 			if(model->bones[b].parent>=0)
 			{
-				R_ConcatTransforms(transform_matrix[model->bones[b].parent], (void*)(relatives+b*12), transform_matrix[b]);
+				R_ConcatTransforms((void*)transform_matrix[model->bones[b].parent], (void*)(relatives+b*12), transform_matrix[b]);
 			}
 			else
 			{
@@ -1447,9 +1447,9 @@ void HLMDL_DrawHitBoxes(entity_t *rent)
 	{
 		//If we have a parent, take the addition. Otherwise just copy the values
 		if(model->bones[b].parent>=0)
-			R_ConcatTransforms(transform_matrix[model->bones[b].parent], (void*)(relbones+b*12), transform_matrix[b]);
+			R_ConcatTransforms((void*)transform_matrix[model->bones[b].parent], (void*)(relbones+b*12), transform_matrix[b]);
 		else
-			R_ConcatTransforms(entitymatrix, (void*)(relbones+b*12), transform_matrix[b]);
+			R_ConcatTransforms((void*)entitymatrix, (void*)(relbones+b*12), transform_matrix[b]);
 	}
 
 	for (b = 0; b < model->header->num_hitboxes; b++, hitbox++)
diff --git a/engine/gl/gl_ngraph.c b/engine/gl/gl_ngraph.c
index 17658adea..a03fe8d91 100644
--- a/engine/gl/gl_ngraph.c
+++ b/engine/gl/gl_ngraph.c
@@ -198,7 +198,7 @@ void R_NetGraph (void)
 		Vector4Copy(rgba[2+0], rgba[2+1]);
 
 		if (a)
-			R2D_Image2dQuad(p, tc, rgba, shader_draw_fill);
+			R2D_Image2dQuad((const vec2_t*)p, (const vec2_t*)tc, (const vec4_t*)rgba, shader_draw_fill);
 	}
 #endif
 }
@@ -248,7 +248,7 @@ void R_FrameTimeGraph (float frametime)
 		Vector4Copy(rgba[2+0], rgba[2+1]);
 
 		if (a)
-			R2D_Image2dQuad(p, tc, rgba, shader_draw_fill);
+			R2D_Image2dQuad((const vec2_t*)p, (const vec2_t*)tc, (const vec4_t*)rgba, shader_draw_fill);
 	}
 #endif
 }