I've been have somewhat of the same issue since I updated with the GM version and now I have the same issue in the public release.
-I go to use my email and it says the ID has never been used, go thru the setup process, and once I get to the last page where you enter a nickname it doesnt go any further so I presume Apple has built a newer Game Center for all the nifty things they said you'd be able to do in iOS 5.
I have not had this problem. I am using the same nickname that i have used in other firmwares. I justed signed in and I was all good to go. Try signing out and signing in again.
I have not had this problem. I am using the same nickname that i have used in other firmwares. I justed signed in and I was all good to go. Try signing out and signing in again.
I actually can't sign in due to the fact that it says that my ID has never been used in Game Center... and when I try to use my regular Apple ID it says its incorrect.