I see now, it looks like you're right about incorporating textures, I've just never bothered to use that feature in Pro, I've been using both Vue D'Esprit 4 and Vue 4 Pro (Esprit at home and Pro at work) and don't save objects out very often (which is where it prompts you if you want to incorporate materials). Just did some testing and it does seem to incorporate the texture, even if you delete the original source it still holds it as part of vue. Sorry about that, I'm still getting used to some of Pro's new features. I don't have any experience using render cows but it almost seems like it might be two different issues, have you tried the same settings with a different file to verify that it's something in the file or something in the program itself?