In reply to M.

M, I don't think this is a plugin which should be continued though.

If I were to take over this plugin, I would just write an entirely new plugin from scratch, then write an exporter/importer to shunt the content over. The base code on this is not useful at all IMHO. AFAIK, the base code in this was written before WordPress even had custompost-type support, so the whole architecture simply doesn't match how WordPress operates. This is presumably why the project has eventually come to halt.

But then bbPress already fills the forum niche quite well, so I wouldn't make a new plugin either, I'd just make a bbPress importer. Hence my original comment above.