PC Games Game Bug


Does anyone know the problem? :(,

Here's what happened, I bought the WoW expansion, Installed it(Nothing bad happened), Opened WoW then clicked 'Play' and got this!

I also restarted my PC and upgraded my account to the games expansion, That didn't work :-/.
Alright, Thanks!, But i un-installed WoW and then re-installed with the expansion before i had to download these 10 hour patch downloads, and i got on the games login screen fine, I just have to wait till these patch downloads finish( In 5 hours (y_-) ) to see if it works or not.