Screwed around with the Game`s Languages and now I cant start WoW.

So yeah pretty much what the Title says, I bugged around with the WoW`s languages (Cataclysm) and now I cant get In WoW because its "downloading" the language packs, thing is, the downloader can`t download the language packs for whatever reason that is. My question is, any way to set the game`s language back to original (English) without downloading the whole client again? Because thats kinda a no-go for me, internet has been crap the last few months. Thanks to everyone that took their time to read/reply to this post!


With Best Regards
Your Friendly next door Guardsman