Hello. Do you have problems with launching the game or you can launch it but can't play ?
I don't really have Mac around me, so it's kinda impossible to test OS X build for me and reproduce the bug. Theoretically, we can fix this issue, but I need more info about the crash (e.g. Is there a blue screen with white text after you press "Start", and if it's here, then what is written there). And since I can't playtest the bug, fixing would be matter of faith :^)