Sims 2 expansion pack problems?

um well i can't answer your first question because i'm not sure what expansion packs you have and what you installed before the one you uninstalled. But if usually they ask for the most recent expansion pack that was put into production. Say you got h&m fashion but you just bought nightlife, it should still ask for h&m fashion to run your sims 2. And if you just run the most recent sims program it will play all your expansion packs with it.