3 days that I’m trying to find a solution and finaly it works ! (WordPress 2.8 + bbPress 1.0 rc3).
My solution, for a WordPress in the root and bbPress in a folder:
1) I don’t use the bbPress integration plugin for WordPress
2) Default wp-config and bb-config
3) Simply put AUTH_KEY, SECURE_AUTH_KEY, LOGGED_IN_KEY in the two config file (and double check that it’s the same)
4) Go to good ol phpMyAdmin and check that:
in bb_meta: in wp_options:
bb_auth_salt = auth_salt
bb_logged_in_salt = logged_in_salt
bb_nonce_salt = nonce_salt
