Problem to download Wow-3.3.x-to-4.0.0-patch-NA

hello i'm newbie and i have a problem

when i will download i have that (see the screenshot)

http://img15.hostingpics.net/pics/121209helpwow.png

link of the screenshot: http://hpics.li/2a6907f

thanks you at people who will give me some help

stop the update, your client does not need any update just log-in by using Warmane Account name, not email address