As title says, I can login to the data center, see my character select screen and start to log in, but the initial load screen stops after ~1 second to give me a 90k error. Thinking maybe (despite there being an error code for it) this could be a version mismatch, I have launched in Admin, forced the check update via boot.cfg, changed DNS and just completed a fresh install and nothing will get me any farther than about 1 sec of load screen.

Please help if anyone has any further suggestions.