I had to reinstall my sims2 recently but I start to play it and it crashes on me when its starting to load for no reason at all! What can I do to fix this problem?

Every time i download something like a car or custum content that i need to click accept with i cant get my sims to get engaged or married at all! how can i get rid of this problem so i can have custom content in my game and engage & marry my sims off?
:h3lp:HELP ME!!!:h3lp: