I got this error screen when trying to play a 2008 game vs. Grinchler.
I saw this screen 5 times, twice when I tried to join a game he set up, twice when he tried to join a game I set up, and once when he challenged me.
I did not get this issue when joining a 2010 game right afterwards.
I have not had this error before; Grinchler said he had.
