Do I read right that you run the obj through UV mapper, but don't create any UV map for the 3ds files? this would explain why you can't then easily map the textures once in bryce. Does Wings have any UV mapping capability that could be used before exporting to 3ds or obj? (I'm not a wings user I have Max) Is UV mapper obj only? or can it also do 3ds files?

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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.