
didn't work. but i can give more clue for problem. it's mostly gave it when pm is received or send.
and it is point from this -->> index.php?pretty;action=pm
to this file's --> Sources/PersonalMessage.php
line --> (1058) if($memberContext[$message['id_member_from']]['random_signature']==-2){
and (1060) elseif($memberContext[$message['id_member_from']]['random_signature']==-1 && $message['signature_id']!=-2){