OK, I am SURE that I told Carrara to save all shaders internally on a project I am working on. I saved it, closed it, and then re-opened it, and my shaders were all mixed up. (On a column that I had made grey marble, it was plain gray plastic, among other problems... Any ideas? Am I doing something wrong? Oh, it seems to happen only on files that I have imported models... Thanks Everyone! Aeryk71