Me and my son just bought Trackmania 2 Stadium on Steam. We use two different PC's connected to the same LAN.
My son had no problem starting up the game, but when I'm creating an account I get a message that says something like "the key is already in use". I checked my son's Stadium-key, and this key is identical to mine. Probably the reason that I'm not able to start the game...We ha bought two separate Stadium elements on steam and got the same CD-key.
What now?
