[douffle]

I installed this mod on two of my forums and each time a spammer tries to register I get a database error. This is the case for both forums. The error is as follows:

Database error in vBulletin 3.7.3:

Invalid SQL:
SELECT DATEDIFF(NOW(), '2008-10-10 12:55:48') AS DAYS;;

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 '(NOW(), '2008-10-10 12:55:48') AS DAYS' at line 1
Error Number : 1064
Request Date : Sunday, October 12th 2008 @ 01:46:10 PM
Error Date : Sunday, October 12th 2008 @ 01:46:13 PM
Script : http://www.webmastersden.net/register.php?do=addmember
Referrer : http://www.webmastersden.net/register.php?
IP Address : 92.241.169.185
Username : Violettaext
Classname : vB_Database
MySQL Version :

Anyone else get these error notices?
Anyone have any suggestions on how to resolve it?
I'm still using MySQL 4 on one forum and MySQL 5 on the other.

Thanks