Make sure you use different table prefixes for WP and bbP.

bb-config.php shouldn't have anything extra defined in it past that, if you had left in WP2.8. Since you downgraded to 2.7 your bb-config.php needs to have define('WP_AUTH_COOKIE_VERSION', 1); until you upgrade back to 2.8, at which point you need to remove that line again.

Your wp-config.php needs to have define('COOKIEPATH', '/wordpress/'); where 'wordpress' is the path to wherever you installed WP, or define('COOKIEPATH', '/'); if WP is in your site's base folder.

Visit the WP administration settings and fill out the bbPress Integration Plugin settings (but mind what I said above, you probably shouldn't add what it suggests adding to your wp-config.php file).

Visit the bbP administration settings and fill out the WordPress Integration settings there as well.

As I said in the posts I linked earlier, everything works fine for me with WP2.8-RC1 or any of the betas, and bbP1.0-RC1, except that if users log in from bbP, they can't log out from WP (which seems a somewhat trivial issue since I doubt many users will need to do that).

Hope you can get it working.
peace~

All i need to do is define define('COOKIE_DOMAIN', '.atsutane.net'); and define('COOKIEPATH', '/'); inside wp-config.php

And if you are using Bbpress 1.0 RC1 with WP 2.7.1, you need to defind this define('WP_AUTH_COOKIE_VERSION', 1); inside bb-config.php.

Another thing is, i let bbpress handle all registration and log in/log out process.

Hope this will help you :)

I have the blog and forums kinda working -- but when you go from the blog to the forum, it doesn't carry over the password/username. It requries you to sign in again.

So I downgrade my WP back to 2.7. Is there a way to do one sign in between 2.7 and BBPress 0.9.0.5 - without having to sign in again?

Should I roll back to a previous version? If there are versions of WordPress, BBPress and Plugin that do work together -- please share what versions that play nicely together.