I can only assume it must be a Wings3D thing. I use 3D Studio Max extensively and I do most of my mapping there and I've never had a mapping problem when imported into Bryce. Have you tried using one of the other Bryce mapping formats like world and object cubic? Also make sure mapping frequency in Bryce is set correctly. Hope this helps. Sorry I couldn't be more specific since I have no idea on how Wings 3D operates. Does Wings 3D allow for different mapping coordinate formats?