The Sims 3 freezes and crashes

[artemis3333]

My Sims 3 freezes then crashes when I get to create a sim or when I use a household that came with the game. I got the Sims 3 starter pack (includes Late Night and High end loft stuff). I got it from GameTreeMac.

Here is some of my laptop's information:

Mac OS X  Lion 10.7.4

Macbook Pro 13.3 inch

Processor: 2.3 GHz Intel Core i5

Memory: 4 GB 1333 MHz DDR3

Graphics: Intel HD Graphics 3000 384 MB

If you need more info just let me know.