Gives me an 'undefined variable' error to do with occlusion when I turn on shadows. Thruster plumes do not show up at all. The sun looks horrendously gigantic. I've tried undoing the damage by force re-downloading and overwriting my game files, but then it just plain crashes. I'm giving this a good rating because I see others got it to work successfully and I know these problems are my fault, but I would appreciate any guidance on how to either completely uninstall it or get it to work properly.