Hmm... have you registered for the image host separately?
It runs on a separate registration system from the forums, since the code that we used is not compatible with our forum software. So if you haven't registered separately, you'll need to create an account on there. It should work once that's done!
It's a bit of a hack. I've been meaning to look into ways to improve it, but as it stands now, I don't really have any ideas on how to integrate it. For the time being, it's probably going to remain a separate registration setup. It's not the world's greatest image host by any means, but it gets the job done.
Let me know if you have any future issues!
(Better yet, anyone have MyBB plugin experience here on the forums? We've gotten some traffic from our plugins that we've submitted in the past. If anyone is interested in tag teaming one, we can design a native image host as a plugin to MyBB. It would be a hugely popular plugin if we managed to do it.
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