I get a long error code whenever I try to play..

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/

Hi, I have the same problem, I give you my DxDiag (http://pastebin.com/P7DXftGQ)

Looks fine but you seem to a beta driver installed. Try if it works with a non-beta one.

Don't working with the v14.4 and the 14.7 beta. I try to redownload the game

Also try reinstalling Origin

I am able to enter the houses via build mode but if I try to play the game I get that same error message.

Having the same error!

http://pastebin.com/tLjxuPLv

there is my dxdiag info