I've had a private server running for a week now. I ran into a problem just recently that will not allow me to log into the game at all. My server is updated to 3.3.5a, and so is my WoW client.
My realmlist only has my server dns in it. When I login to the game, I get this error:
It shows the nightelf screen and says, "Downloading update" and then it tries to get me to restart.
I have searched extensively and nothing seems to help.