I don't know much about macs but from what I know the update wasn't available for them specifically so there might be a few glitches and issues. If nothing else works I suggest that when you play it and whenever you want to exit out of it, to use the buttons ctrl, alt, delete or del, simultaneously and get rid of it from your task manager. (Unless of course it doesn't work that way for macs) Sorry if this isn't much help, I'm really not familiar with anything other than windows ;o;