"Critical Error"

I think this has been reported a few times already, but when I've recently tried to enter a game I've been automatically denied by a message saying there was a critical error.

I'm just going to wait to see if they end up doing some sort of patch before I go and get myself leaverbuster'd again.

This is already the second game it's happened. First was last night but I thought it was just a fluke.

First Game was a Normal game, the one just now was a Bot game.