Hi, I just bought a brand new 17" MacBook Pro 2.5ghz, 2gb ram 8600gt videocard and whatever. It's a good computer... My last mac was one of the first 15" Macbook Pro with intel. Even that one played Guitar Hero 3. The problem is that I just installed Guitar Hero 3 (not downloaded, I bought it) so it should go smoothly and, at least, launch. It doesn't. It crashes every time. What could be wrong ? Thanks!