I reper this proplam:
Hey,
It’s pretty simple, install User Role Editor plugin into your WP. Then visit plugin and reset all user roles to default and it’ll work…I had same problem but now it’s working..
Thanks
and
Never mind I just fixed it. In case anybody else experiences this problem, here is what I did:
(back up database first)
1) deactivate BBPress
2) install User Role Editor
3) Click the red Reset button which will reset all roles to WP defaults
4) Re-activate BBPress.
thx