Hi, can any one help me please. Just got my Retina MBP today, and used migration assistant to transfer my old mac over to this one. All has worked find apart from my Grand Theft Auto Vice City game that I downloaded off the app store. When i click on the icon to start the game, I can hear it stating up, with the start up music, but I can still see my desk top, it is like the window is invisible or something. When I go into mission control view whilst the game is running, there is a GTA VC app icon, and save where the window should be, but I cannot see anything. Can anyone help?