I am having the same freaking problem. I can't connect to guitar hero world tour. It says: 61070: Communications error. You have been disconnected from WFC. I know it's not my wifi because it can access the Internet and all that crap. What is going on?!
I like that games can be fixed after the fact, hate that it's being abused via beta tests... And DLC... I was a 7800 owner back in the day and loved Impossible Mission, turns out I couldn't beat it because it was actually impossible lol