Not 1017, error 90000.

I can get into the queue no problem, just when I get to the head of it the loading screen flashes up (with the moogle mail main in the bottom right) then the error 90000 pops up and it's back to the main menu. I do get the "You are already logged in, please try again in a few minutes" if I try log in with a different character immediately after getting an error 90000 so it appears I am being logged into the realm.