I think I've found the issue. It seems that the mental ray plugin won't load. I've managed to recover the files, but now mental ray won't work. I've tried loading the plugin manually, but I'm recieving the following error: "// Error: line 1: The specified procedure could not be found. (Mayatomr) //"
Perhaps this is also why it crashes when I attempt to load it on the college's computers, too. I can work just fine, but I can't seem to preview any lighting or do any test renders.