[@johnhiler Member 15 years, 7 months ago]

Try the instructions here?

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

WordPress 2.7 uses a different type of cookie, so you can either downgrade the WordPress cookie (using SuperAnn’s plugin) or upgrade the bbPress 0.9 cookie (using _ck_’s plugin). Both are linked from the instructions!