BuddyPress.org

OK, I found the problem, but I don’t have a solution, if you look at https://codex.wordpress.org/Upgrading_WPMU and this is upgrading for 2.7 to 2.7.1 but the process is the same with 2.6 to 2.7.

You see:

define(‘ADMIN_COOKIE_PATH’, ‘/’);

define(‘COOKIE_DOMAIN’, ”);

define(‘COOKIEPATH’, ”);

define(‘SITECOOKIEPATH’, ”);

If I add that into wp-config.php as instruct, when a user log in and then use the log out link from wp-admin or on the adminbar, they are log out from wp-admin but not really log out from buddypress member or home theme or adminbar at all. Though if you log out from buddypress member or home theme directly, you are log out of everything, but adminbar still is a problem as when you click log out it only refresh.

Hope that clear the fog up. So when I remove those lines above from wp-config.php, everything works just fine.

How to fix?