If you get invalid game game version DO NOT UNINSTALL AND TRY AND UPDATE AGAIN. It has to do with authentication servers not being updated yet, See the blue post and forum below for more information
http://forums.worldofwarcraft.com/thread.html?topicId=16365827040&pageNo=1&sid=1#13
http://forums.worldofwarcraft.com/thread.html?topicId=16365827040&sid=1&pageNo=10
scroll down to the blue post lol
Rob do you have aim or anything where I can chat directly to you?
yeah i have msn mate and im on vent atm