Well I have been trying to log in for the past two hours, and so far I can launch the game, get to the login screen, enter my credentials, get to the character selection screen, but then as soon as I click, the game closes.
*EDIT* It cannot be my account. I just tried it on my laptop which is under the same internet network and I can successfully log into my characters. I have changed nothing since I have played yesterday, I just cant seem to figure out why I can't connect on my desktop.
This thread is very old - your issue has nothing to do with this, the server is just down. No one can log in.