[@fel64 Member 17 years, 8 months ago]

I can’t remember which version added what, but make sure to activate your plugins in bb-Admin/Site Management or they won’t work.

Try this:

<?php $user = bb_get_user( topic_last_poster() );

get_user_profile_link( $user->ID ); ?>

You can make it one line if you want but you need those semicolons.