Welcome! This is where you can post messages, comments, or basic questions from the SIMS game. You will NOT get a response from us, but from other people in the sims community who share your view, or know your answers to your questions.
I would probably suggest you re-install your game again. Unfortuently you will lose a lot of the objects you have downloaded but that could be the reason why it crashes a lot. If you have too many objects downloaded, and your computer cannot handle the capacity, then you should cut down on the downloading. I hope that helps.