Ok, I did some searches in the WP DB and removed some more referrences to buddypress (just search for ‘buddy’ or ‘wp-bp’).
Alex, this probably works for you too, as you did exactly what I did. Asfame, thanks for thinking along.
If you delete all ‘wp_bp’ tables, the forum installs. But it states that the forum is created in /wp-content/plugins/buddypress/bp-forums/bbpress/ (should be: domain.com/forum/ in my case)
I don’t have buddypress nor bbpress in my plugin directory any more. I guess I should remove more from the DB to make this work, any ideas?
I have exactly the same problem. My .htaccess file contained almost nothing, nevertheless I regenereated it without any changes.
Any other ideas? Is something still written in the WP DB tabels?
