Hello all For the Past Few Week I have been having an issue With the Game Center. I have 4 Mac Devices 2 iPhone 4's, An Ipad 3, and a Macbook Air. On all 4 Devices, When trying to sign into the Game Center I get the Error *Cannot Connect to game center server* There is an Exception, the Macbook Air Gives the Error *The requested operation could not be completed because local player has not been authenticated.* Im not sure Whats going on.. Can anyone help? Just an Update, I can Sign in on a Different Account, But my Main account Gives me the Error.