SIMS GAME IS CONSTANTLY CRASHING (MAC)

Hi so I have the Sims 3 Base game and all the expansion pack and some of the stuff pack.

My problem is everytime I create a new Sim my game Freezes and I have to force shut down my Mac. and Sometimes when I am playing my game will just automatically close. Also Sometimes when I havent saved for a while and try saving my game It says id does not save and an ERROR message comes out. THIS IS VERY FRUSTRATING. Also I notice In the Launcher you know all the Logos below, some of my older packs before University does not show up. But when I play my game the contents are Available. Does the logos contribute to the constant crashing and freezing of my game? What do I need to do? what should I do? PLEASE I NEED HELP!

-P