Another weird thing, when I downloaded the same POD file to run on the target (an OMAP3 board with PVR SDX), the terrain was dotted with opaque areas (dark) where the shadows are supposed to be. I didn't get this problem with PVRShaman. But when I used another tool to generate POD files such as AccTrans3D (3ds MAX9 Export-->AccTrans 3D Import-->Collada export-->Collada file-->Collada2POD Import-->POD file export), the opaque areas were gone, but my initial camera position was all wrong. Thus, was there a problem? and btw, is there a tool to generate Collada from POD file that I could use for debugging? Please help and many thanks in advance.