Found little bug (already updated the package)
when u edit messages in the Outbox, it wouldnt update recipent if u change it.
so, in pms.php find: SET pms_date = $time, pms_subject = '$subject', pms_text = '$message', pms_bbcode = $bbcode, pms_html = $html, pms_ip = '".$session_info['session_ip']."'
Replace with: SET pms_date = $time, pms_to = $user_id, pms_subject = '$subject', pms_text = '$message', pms_bbcode = $bbcode, pms_html = $html, pms_ip = '".$session_info['session_ip']."'