My game is trying to patch itself

Hey i have the Wothlk but when im trying to log in it just starts a patch and tells me to restart the game to get it to v.4.0.0.12811. I'm not using an email-adress linked to a battle.net account either.

edit: I have also changed the Battle.net.dll to Battle0.net.dll

are you using your warmane account name to login? using any email will make the game update.