I installed several user scenarios after getting used to the game. They worked fine, and then I shut down the computer. The next day, my Europa file disappeared. I could not find the Europa file anywhere. The problem is, I can't play Europa from the cd or uninstall it because it can't find it. Unfortunately, the Install button is grayed out, and I can't click on it to reinstall Europa. I have never had any problem like this in any game ever before. Any help will be appreciated.