Hi there. I'm having trouble getting to the third level of Call of duty. When the game loads an error message appears and fails to load the game The game was re-installed and the same thing happened again. I then installed the game on to my G5 Quad tower without any problems. Is this a intel, operating issue?? Has anyone had this problem?? I'm running a MacBook Pro 2.33. Operating system 10.4.9 Your comments are appreciated. Many thanks.