That was happening to me earlier. I kept trying over and over and kept getting that same error. Finally I just turned off my PS3, turned it back on, went to the game, got the same error, tried one more time, then it finally went through.
Also try reading these links, maybe something will help:
http://support.na.square-enix.com/fa...67495&ret=main
http://support.na.square-enix.com/fa...67502&ret=main