Database error ! when ı send pm to members..

[KRaL_JAcK_]

I use pmsender.. and my vbulletin version is 3.6.8..

When ı send pm ; ı see this error..ı can send to 5000 members.. but my forum is 17000 members..

error is :

Database error in vBulletin 3.6.8:

Invalid SQL:
INSERT INTO pm (pmtextid, userid) VALUES (59004, );

MySQL Error  : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
Error Number : 1064
Date         : Saturday, August 4th 2007 @ 11:59:27 AM
Script       : http://frmturk.com/forum/admincp/pmsender.php?do=send&title=Bedava%20para,kontor&message=Ayrıntılı%20bilgi%20forumumuzda%20mevcuttur..%20herkes%20ama%20herkes%20kazanabilir....%20Bilgi%20i?in%20Dost%20Cafe%20b?l?m?ne%20bakınız%20...&limitnumber=2000&group=6,21,8,7,5,3,2&sgroup=&line=&limitstart=6001
Referrer     : http://frmturk.com/forum/admincp/index.php?loc=plugin.php%3Fdo%3Dproduct
IP Address   : 85.100.91.143
Username     : Ersin Başar
Classname    : vb_database