[the_sisko]

Found the bug:

If you allready installed the hack open posting.php and search for:

PHP Code:

$DB_site->query("INSERT INTO modlog (type,userid,threadid,threadtitle,fromforumid,toforumid,timestamp) 
        VALUES ('3','$bbuserid','$threadid','".addslashes($threadinfo[title])."','$curforumid','$movetoforumid','".time()."')"); 


and replace it with:

PHP Code:

$DB_site->query("INSERT INTO modlog (type,userid,threadid,threadtitle,fromforumid,toforumid,timestamp) 
        VALUES ('3','$bbuserid','$threadid','".addslashes($threadinfo[title])."','$threadinfo[forumid],'$forumid','".time()."')"); 


What was the bug?
You need to change the variables:
$curforumid
$movetoforumid
to
$threadinfo[forumid]
$forumid'

Now it work for me!