You are not the only one, there have been 2002 and 90002 errors all day. My main character is on Diabolos and when I get to the loading screen after choosing the character I get a 90002 error and disconnected from the server. It has been like this for 6 hours now for me, others have been posting a few hours prior to me trying about receiving the same error. I am able to log on to alt characters, but for some reason only my main character receives this error.