Forum Database error in vBulletin 4.2.0:
 

Anyone know what this can be due to?

Code:
Database error in vBulletin 4.2.0:

Invalid SQL:


SELECT data, expires, locktime, serialized
FROM cache
WHERE cacheid = '';


MySQL Error :
Error Number :
Request Date : Tuesday, October 30th 2012 @ 11:28:14 AM
Error Date : Tuesday, October 30th 2012 @ 11:28:14 AM
Script : http://www.XXXXXXXXXXXX.com/external.php?type=RSS2
Referrer :
IP Address : 109.109.254.138
Username : Unregistered
Classname : vB_Database
MySQL Version :