Issue: "My Subscriptions" Database Error

Database error in vBulletin 4.2.2:

Invalid SQL:
SELECT  COUNT(`subscribeid`)  AS `subcount`,folderid FROM `vw_subscribe` WHERE userid =  AND  `folderid` IN (0,0)  GROUP BY folderid;

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 'AND  `folderid` IN (0,0)  GROUP BY folderid' at line 1
Error Number  : 1064
Request Date  : Saturday, April 19th 2014 @ 11:32:53 PM
Error Date    : Saturday, April 19th 2014 @ 11:32:53 PM
Script        : [url]http://forums.intpcomplex.com/wiki_subscribe.php[/url]
Referrer      : [url]http://forums.intpcomplex.com/wiki_index.php[/url]
IP Address    : 71.201.229.147
Username      : Ptah
Classname     : vB_Database
MySQL Version : 5.5.36-cll