You probley do not have enuf RAM. Here is a page on EA's Support Website. https://help.ea.com/article/sims-3-crash-freeze-troubleshooting-after-patch-1-33 How to find out RAM on WindowsPC. http://windows.microsoft.com/en-us/windows7/Find-out-how-much-RAM-your-computer-has How to find out RAM on Mac.…