I can't quite figure this out! I first installed University, and then tried to download a dorm, which didn't work. When I tried to start it up again, it wouldn't. I manually uninstalled it (wasn't available in the add/remove panel), and then reinstalled it. Now The Sims is telling me it was uninstalled. It works and shows up on the computer, but I still can't download dorms. I have nightlife over it as well.