can´t patch

i just installed and after i login in the game it asks for a patch!
I cant play after restarting the game and doing the patch...
Any advice?

Could be a lot of reasons, the most common and easiest fix is to make sure you use your Warmane Username and not your e-mail. If that doesn't work, look around the forums (with the search tool) for anyone who had this problem resolved and try those fixes out.

Upon failing that...Redownload!:3

have you downloaded the client from Warmane? if not be sure you are using Cata 4.3.4 and check the realmist, this is the one to play here:
set realmlist logon.warmane.com