Game unable to start initialization error at startup.

I downloaded the sims4 base game and all stuff packs and ep's from G4TW and everything was going find and I played the game for about a week(and I didnt have origin downloaded). Then oneday I downloaded 3 stuff from TSR (a lot and 2 dresses) and after they were done downloading I tried opening the game and it wont open. I dont remember what was the error message that popped up at that time. I deleted the 2 dresses and the lot and it still wont work. I uninstalled the game and reinstalled, still wont work. tried downloading origin, didnt work. I tried everything I read online that could fix the problem including the ultimate fix  but nth makes it work. The error msg I get at the current moment is : Game unable to start initialization error at startup.
What could possibly be the problem??

btw Im using a mac laptop, windows 7




Mod edit: moved to "Mac Support".

- Carlos