My group was now just doing the DRG AF fight, and when one of our group members left the instance, none of us could leave without returning. So at least two of us decided to try logging out.

Well, now that we've logged out, after we go to character select screen and try to log in with our characters, we're getting the message: "An Error has Occurred. (40000)6"

Edit: We managed to get back in, but some clarification would be nice on this error. d(^.^)b