[Ivaylo Draganov]

Hi,

I also was stuck on that for a while. I found it easier to downgrade WP 2.7 cookies with this plugin:

https://wordpress.org/extend/plugins/wordpress-26-and-bbpress-09-integration/

Just make sure you juse just the old SECRET_KEY in wp-config.php and match it to the BB_SECRET_KEY in bb-config.php

Clear your domain cookies after activating the plugin and login again. Test login/out on both installations.

Of course you mast have completed the integration steps described here:

https://bbpress.org/forums/topic/wordpress-and-bbpress-integration-101