Thank you for letting me know! Let me see if I can fix that. This is my first time deploying executables from unity.
I've recompiled with some of the build settings changed and put up a new mac executable. Download and see if that helps?
Do you get stuck with the game loading (before the title screen) or when you start a new game? If it's the latter, be sure to give it at least thirty seconds. Start up is curiously slow on macs. (I suspect you're already doing this, but just in case)
Can you tell me the Operating System version you have on your mac? That might help.