Hi! So I installed the Sims 3. I then installed the update. After that it wouldnt let me launch the application because "The Sims 3 is not supported on this architecture." The icon had a circle and a slash through it on top of the actual icon. (the no smoking sign) I reinstalled and got the same problem. I trashed the Sims and then reinstalled again. It worked this time. No problems. I played for a while, then quit when I was bored. Now it's giving me the same error message as before when I try to launch. Weird! I am running a 2009 Mac Pro with 10.5.7 if that helps. Any advice?