Having similar issues with Gilgamesh (error 2002 and at one point a 5009) and the Aether Data Center. Last night my work around was logging into a character on a different Data Center then logging back into Gilgamesh that worked once out of every couple times. However, as of today that no longer works. I get that its congestion on the login server but its frustrating that every time it occurs it crashes the game client meaning I have to go through the arduous process of logging in that SQEX Token users have.