Patch Required Error

Hey guys, I just downloaded wotlk (old). It perfectly launched and opened the good old Wotlk screen. I entered my e mail and pass and log in the game. Before character select screen, it says I have to download the patch. The thing is , it isnt downloading, always shows %0. After a while, it says ''Failed to download the patch, restart wow again''. Has anyone experienced such problem ? I will be most welcomed if you can help me guys.
Thanks in advance.

Enter your account name instead of your email address, that's your problem right there.

BOOM! HEADSHOT my friend! Thank you very very much dude, you re the best!