We are aware that some OSX users have been experiencing crashes when loading levels, to do with the screen resolution. This is something to do with the Mac Retina display scaling. We would request all mac users to please send error logs or any information with the crashes if they have them. It's also perfectly understandable if you want to request a refund due to those issues, however it would be better if you sent photos of the crashes so we can investigate.
OSX Crashes
