I am having the same exact problem. However, I am doing what was said above, and integrating deeply and including the header. I have no experience with code, so I was wondering if someone could tell me what to do? I am using the same plugin, and no luck.
This forum is integrated with my WP blog, which is a weather/severe weather blog. The site is finished, its just picking up some users that is a but tough feel free to check it out. If you at all feel like you want to register, do it through WP, not bbPress. I haven’t altered the login system on bbPress yet