xenic - I'll try to find the temp file. I can't save to a new file name. When I save to a new name, I get the same error message; a file is created, but there is nothing in it when I open it up. It saves really pretty quickly but gives the error message at about 90% saved. Changes I'm making are moving meshes around and adding more stuff - not necessarily more high mesh stuff. I was adding more photo textures when this mess happened. Nothing else running. Going now to try the temp file thing. Thanks --