Gordon Shumway: Ah, I've got it. For some strange reason, your browser tries to validate XML but no XML is used, of course. It is not a right behavior and if it happens with other browsers as well, something is wrong with your system at all.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)