Unfortunately, all too many products will look for BUM bump maps when you don't need them if you have Poser 5. Poser 5 is not smart enough to automatically fix these problems. The best way to headoff any such problems is to try CorrectReference, the free version here in FreeStuff. If that fixes your problem you're set. You'll find many, if not most, bump maps may need to be fixed so the bump map is connected to the Bump channel. MAT Pose Edit can fix this problem on MAT Pose files. Just run the Batch processor.