Hi!
Are you using the short codes for bbPress to insert the forms to write a new topic? I noticed recently that my forums page didn’t let non-admins post a new topic (I was using the short code [bbp-topic-form] ) but gave them the message “You can’t post new topics”.
The issue was that my permalink was forum and the page with the shortcodes had the same URL. It seems to be a conflict between the short codes and that setting. I’ve written my solution in the bbPress trac, don’t have the URL here unfortunately.
