I've narrowed mine down a bit, it belongs to a 'my MP3' and 'my downloads' folders. If I double click on them, it tells me there is no such folder, but if I remove them it stops other things working!
(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)