Rhino Autosave not working

So Rhino will do the autosave, but never create the full *_RhinoAutosave(xxxxxxx).3DM file. It always creates a .tmp file, and that’s it. The file size is what it should be, but it never brings along the vray materials, so if I were to open the .tmp file, it has no finishes. Thoughts?

Hi Tim - this is in V5, correct? If you run the Autosave command, and watch the folder - the autosave does not show up there?