I have the Sims 2 installed on my computer along with one expansion pack. Any time I try to add an additional expansion pack the game graphics have the walls flashing in red. I had a video card and memory installed and I still have the same problem. I can even uninstall and reinstall with a different expansion pack and STILL have the same problem. I LOVE the Sims and I have a BUNCH of expansion packs still unopened in their original packaging because I cant even play the ones I already have. Can ANYONE please HELP me? *tears* I LOVE the Sims 2!