The cube trick is the most dependable in this sort of situation. Are you using Bryce 4? I think I've never had this problem since moving to Bryce 5. For greatest efficiency - a) Arrange your Poser textures in a sensible way so that you find them easily from Bryce. b) Don't bother texturing anything in Poser. Do it in Bryce and save the textures as mats.