Says i need a battle net account to log in

[Xsaaii]

Hi so i just dinged 90 on my second char and then it suddenly froze shortly after,
Here is an image; (from my phone sorry for bad quality)

http://imgur.com/a/c6UGO

[Arbiterone]

See if http://forum.warmane.com/showthread.php?t=275569 helps you.