Forum Discussion
I think you can deactivate a copy so you can reinstall but don't know how that works. Maybe you need to contact CS to reset your copies.
ATM only suggestion I have would be uninstalling everything, all EPs, cleaning all Sims 3 registry keys so that nothing is left on your computer. Then start from scratch.
I tried Customer Service. They're only interested in giving me the same cut-and-paste responses and when one of the dolts finally offered to transfer my case to Level 2, as it were, I gave a literal sigh of relief. He said I'd get an e-mail within 72 hours. 72 hours came and went. If there were some way of making sure the money I used to purchase this game went only to the developers and programmers and such (and perhaps to fine, upstanding citizens like you, Crinrict) and not to CS, I'd do it. XD
I'll try doing what you say tomorrow night. Wish me luck. <3