cron job failure

[bamfonk]

Database error in vBulletin 3.8.1:

Invalid SQL:
INSERT INTO trackerhistory (`date` , `seeders`, `leechers`, `ulspeed`, `dlspeed`) VALUES (NOW(),0 , 0, , );

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
Request Date : Monday, March 2nd 2009 @ 12:41:00 AM
Error Date : Monday, March 2nd 2009 @ 12:41:04 AM
Script : http://www.thegamingfiles.com/adminc...cron&cronid=89
Referrer : http://www.thegamingfiles.com/adminc....php?do=modify
IP Address : ********
Username : Berry05
Classname : vB_Database
MySQL Version : 5.0.67-log


what does this mean? I have the updated mySQL and everything!!