[Thorsten :-)]

I’ve still a similar problem, see https://buddypress.org/community/groups/how-to-and-troubleshooting/forum/topic/error-with-forum-bp-v1-2-5-2/ butte didn’t getany response yet. I use a windows 2003 Server System with the following plugins installed: Akismet, BP Xtra Signup, BuddyPress, BuddyPress Album+, BuddyPress Forums Extras – RSS Feeds, Buddypress Friends, BuddyPress Profile Privacy, BuddyPress Tweet Button, Configure SMTP, Duplicate Post, Easy Verification, Fast Secure Contact Form, Invite Anyone, Jet Event System for BuddyPress, Link Library, My Brand Login, NextGEN Gallery, oEmbed for BuddyPress, TinyMCE Advanced, Transposh Translation Filter, Welcome Pack, WP Google Weather