mermouy on "Polylang makes bbpress admin disapear"

Hi,
I have a problem between polylang & bbpress: when I activate polylang all bbpress admin links disapears, if try to access these admin pages by entering address manually, it answer me that I have not enouth right to do that. (and of course I got admin account)
I was wondering if any workaround has been found for this?
Thanks!

http://wordpress.org/plugins/polylang/