I am stuck in a loop where I am already logged into the Xbox Live account. Upper right displays my Xbox Live account name. I try to play Multiplayer and a pop up informs me that I am required to be logged in to my Xbox Live account. I hit okay, it spins for a while "Logging In" and then I am back at the main menu. If I try to use the multiplayer again, I get the same thing.
Sucks because I wanted to be able to play with friends, but guess it's just too early in the release cycle to do that.