diff --git a/trunk/unmanaged/ubODE-OpenSim/OPCODE/OPC_MeshInterface.h b/trunk/unmanaged/ubODE-OpenSim/OPCODE/OPC_MeshInterface.h
index ff97bd16..c946572c 100644
--- a/trunk/unmanaged/ubODE-OpenSim/OPCODE/OPC_MeshInterface.h
+++ b/trunk/unmanaged/ubODE-OpenSim/OPCODE/OPC_MeshInterface.h
@@ -23,7 +23,7 @@
 	struct VertexPointers
 	{
 		const Point*	Vertex[3];
-		
+		/*
 		bool BackfaceCulling(const Point& source)
 		{
 			const Point& p0 = *Vertex[0];
@@ -36,6 +36,7 @@
 			// Backface culling
 			return (Normal | (source - p0)) >= 0.0f;
 		}
+        */
 	};
 
 	struct VertexPointersEx
diff --git a/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_internal.h b/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_internal.h
index b0c8f5e0..66cf8674 100644
--- a/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_internal.h
+++ b/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_internal.h
@@ -89,20 +89,25 @@ public:
         return Result;
     }
 
-    bool GetVertexUSEDFlag(unsigned VertexIndex) const { return (m_VertexUseBits[VertexIndex / 8] & (1 << (VertexIndex % 8))) != 0; }
-    void SetVertexUSEDFlag(unsigned VertexIndex) { m_VertexUseBits[VertexIndex / 8] |= (1 << (VertexIndex % 8)); }
+    bool GetVertexUSEDFlag(unsigned VertexIndex) const
+    {
+        return (m_VertexUseBits[VertexIndex >> 3] & (1 << (VertexIndex & 0x07))) != 0;
+    }
+    void SetVertexUSEDFlag(unsigned VertexIndex)
+    {
+        m_VertexUseBits[VertexIndex >> 3] |= (1 << (VertexIndex & 0x07));
+    }
 
 private:
     bool ReallocVertexUSEDFlags(size_t VertexNewElements)
     {
-        bool Result = false;
         uint8 *VertexNewBits = (uint8 *)dRealloc(m_VertexUseBits, m_VertexUseElements * sizeof(m_VertexUseBits[0]), VertexNewElements * sizeof(m_VertexUseBits[0]));
         if (VertexNewBits) {
             m_VertexUseBits = VertexNewBits;
             m_VertexUseElements = VertexNewElements;
-            Result = true;
+            return true;
         }
-        return Result;
+        return false;
     }
 
     void FreeVertexUSEDFlags()
diff --git a/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_plane.cpp b/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_plane.cpp
index b3342857..49f4a65b 100644
--- a/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_plane.cpp
+++ b/trunk/unmanaged/ubODE-OpenSim/ode/src/collision_trimesh_plane.cpp
@@ -100,12 +100,15 @@ int dCollideTrimeshPlane( dxGeom *o1, dxGeom *o2, int flags, dContactGeom* conta
             //
 
             // OPCODE data is in single precision format.
+            /*
             int_vertex[ 0 ] = VP.Vertex[ v ]->x;
             int_vertex[ 1 ] = VP.Vertex[ v ]->y;
             int_vertex[ 2 ] = VP.Vertex[ v ]->z;
 
             dMultiply0_331(vertex, trimesh_R, int_vertex );
+            */
 
+            dMultiply0_331(vertex, trimesh_R, (dReal *)(VP.Vertex[v]));
             dAddVector3r4(vertex, trimesh_pos);
 
             //
diff --git a/trunk/unmanaged/ubODE-OpenSim/ode/src/osTerrain.cpp b/trunk/unmanaged/ubODE-OpenSim/ode/src/osTerrain.cpp
index cba9f83d..501c9328 100644
--- a/trunk/unmanaged/ubODE-OpenSim/ode/src/osTerrain.cpp
+++ b/trunk/unmanaged/ubODE-OpenSim/ode/src/osTerrain.cpp
@@ -929,7 +929,7 @@ int dxOSTerrain::dCollideOSTerrainZone( const int minX, const int maxX, const in
 
         //set plane Geom
         dCopyVector4((sliding_plane)->p, itPlane);
-        dGeomMoved(sliding_plane);
+        //dGeomMoved(sliding_plane);
 
         numPlaneContacts = geomNPlaneCollider (o2, sliding_plane, planeTestFlags, PlaneContact, sizeof(dContactGeom));
         if(numPlaneContacts > 0)