So... I have the Generations, Ambitions, Late Night, Pets and and World Adventures expansion packs. I also have some Custom Content Installed, but I don't think that's the problem. Every time I play start a game in a new neighbourhood, after a specific time my game crashes and there's an error into the desktop of "Sims 3 stopped working, trying to figure out the problem". I tried removing my Cache files, but the same thing happened, so I put them back. Any more ideas?

I've been having the same problem. I learned that my laptop was getting too hot and I had to set up a fan behind it and after that it was fine. I'm not sure if you're using it on a desktop or laptop. I have all expansions and stuff packs and it didn't happen until after I installed Master Suite, so I just assumed that with the new stuff pack, it used more memory and caused my fan to overheat. Not sure what I'll do when Showtime comes out.

I actually do have a laptop but I also have a fan and usually keep the PC diagonical (anyway I can't explain that lol), because I've had this problem sometime ago, so it's always cool... Me neither! And Showtime sounds sooo cool! D:
I'm really scared BTW because it might be due to the CC in my game o__O