I got a new laptop this week and I've reinstalled all my Sims 3 games and content. I had to save my house and household and start again in a new world because I bought new expansions while I didn't have a computer and installing them broke everything. It works now, but while it says that my Katy Perry items are installed, but they aren't in the game. I've tried downloading them again but they still aren't in the game.

I'm not sure if it's doing this for other items as well because I have so much content it's difficult to tell. I noticed the Katy Perry items weren't working because my Sim is a singer and she uses the stage props, but they don't seem to exist. Does anyone know how to fix this?