Well just enter your old key again.
The problem is i dont have the key any more because i entered it over a year ago and now i'm moving this topic to help
Re-send key... www.blockland.us
That didn't work for me, because, it was send the key to my old moms e-mail.
In your case, theoretically you'd have to e-mail Badspot.(You still have the key, or so I assume)
Ya I got back. and this time I wrong it down and saved the file in a locked foulder on my old laptop.
there is a topic made for this stuff..