Sims 3 has encountered a problem and need to close

What's your operating system ?

Windows XP.

And i tryed to delete expansion packs, but it still not works. And i really wanna to fix it.. Before 5 months i haved sims 3, and it worked, and only now it not works. What to do?

Could you post your Computer's DxDiag?

To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/

You only have 2 GB of RAM. I would try uninstalling Pets and see if you can play that way. Your computer is probably running out of RAM.

Oh okay, thnaks i will try

Let me know what happens.

It's still same... I uninstalled all expansion packs, i left only Sims 3. But it still saying same.. Before about 5-4 months, i had sims 3 with many expansion packs, but i haved uninstall it. And now it's not working.. And i have no idea what happening.. yesterday i installe sims 3 university, pets and ambitions, it worked, after i install seasons it again saying that "Sims 3 has encountered a problem and need to close". Today i tryed install just these 3 expansion packs (pets, univeristy and ambitions) but it's not working.. I reinstalled only sims 3 but still same problem.. I really wanna fix it..

Are you starting new games to try or are you using existing ones ?

Could you try playing in windowed mode and check on the amount of RAM used. You can do so through your task manager.

XP is no longer supported by Microsoft and you really should consider an update.

I will try update. And i will try again to reinstall. Huh i really need fix it. And i tryed windowed mode it not working still. I even can't open launcher. It jut says "Sims 3 has encountered a problem and need to close".

Try resetting your user files as described in the factory reset described in this post: http://answers.ea.com/t5/The-Sims-3/FAQ-Troubleshooting-Steps/td-p/714/

You won't loose anything. Just make sure to not delete any files  and make a backup.

(not sure if you already tried this.