Hmmm, then you might have to do a reinstall. Why do you think you can't use the windows uninstall? All you have to do is go to your Control Panel and click Uninstall Programs. Then you find a sims game and once you highlight it, you can uninstall it. I don't know if this is necessary, but when I uninstall, I make sure to do it in the order of most recent to base game. Pets, Town Life, Generations, Outdoor Living, Late Night, Fast Lane, Ambitions, High-End Loft, World Adventures, then base game.