I am a download freak when it comes to Sims 3. Unfortunately, my knowledge of computers sucks. I am very careful to install CC where it should go, according to instructions given on this website. Anyway, somewhere along the way I installed either some bad CC or whatever (conflicting/etc), but I couldn't figure out what it was. As a result, I decided to uninstall the game, wipe all CC out, and start over. Sigh. Why is it never as easy as it seems? I use Norton (not a choice, hubby's the software engineer) so I did a registry cleanup as well. I had to redownload (all my games are dig dls) the games. Installed Sims 3 (only). I went to run Sims 3, expecting to update it before I installed the exp packs, but I'm getting an error message that wants to report to Microsoft about the problem. Anyone have any clues on what to do next? Hubby is working 80 hour weeks and can't help. Thanks.