SQL Error when Searching for a user from AdminCP

[lockersoft]

I get this error when searching for a particular user:

Error Invalid SQL: ### Channels ### SELECT follow.title AS title, follow.nodeid AS keyval, 'node' AS sourcetable, IF(follow.lastcontent = 0, follow.lastupdate, follow.lastcontent) AS lastactivity, follow.totalcount AS activity, type.class AS type, (follow.nodeoptions & 512) AS noUnsubscribe FROM node AS follow INNER JOIN contenttype AS type ON type.contenttypeid = follow.contenttypeid INNER JOIN subscribediscussion AS sd ON sd.discussionid = follow.nodeid AND sd.userid = 11733 UNION ALL ### Users ### SELECT follow.username AS title, follow.userid AS keyval, 'user' AS sourcetable, IFNULL(follow.lastpost, follow.joindate) AS lastactivity, follow.posts as activity, 'Member' AS type, 0 AS noUnsubscribe FROM user AS follow INNER JOIN userlist AS ul ON ul.relationid = follow.userid AND ul.userid = 11733 WHERE ul.type = 'follow' AND ul.friend = 'yes' ORDER BY title ASC LIMIT 100;

Exception trace:
## phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/database.php(1215) Exception Thrown
#0 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/database/mysqli.php(249): vB_Database->halt()
#1 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/database.php(583): vB_Database_MySQLi->execute_query(true, Object(mysqli))
#2 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/db/result.php(144): vB_Database->query_read('Invalid SQL:\r\n\n...', true)
#3 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/db/result.php(68): vB_dB_Result->rewind()
#4 /home/dh_b4nae5/dh_b4nae5/2015/core/packages/vbforum/db/mysql/querydefs.php(6931): vB_dB_Result->__construct(Object(vB_Database_MySQLi), '\n\t\t\t\t\t### Chann...')
#5 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/db/query/method.php(68): vBForum_dB_MYSQL_QueryDefs->getUserFollowing(Array, Object(vB_Database_MySQLi), false, false)
#6 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/db/assertor.php(293): vB_dB_Query_Method->execSQL()
#7 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/db/assertor.php(641): vB_dB_Assertor->assertQuery('vBForum:getUser...', Array, false)
#8 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/api/follow.php(406): vB_dB_Assertor->getRows('vBForum:getUser...', Array)
#9 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/api/user.php(174): vB_Api_Follow->getFollowing(11733)
#10 phar:///home/dh_b4nae5/dh_b4nae5/2015/core/vb/vb.phar/api/wrapper.php(205): vB_Api_User->fetchProfileInfo(11733)
#11 /home/dh_b4nae5/dh_b4nae5/2015/core/admincp/user.php(226): vB_Api_Wrapper->__call('fetchProfileInf...', Array)
#12 /home/dh_b4nae5/dh_b4nae5/2015/includes/api/interface/collapsed.php(147): require_once('/home/dh_b4nae5...')
#13 /home/dh_b4nae5/dh_b4nae5/2015/includes/vb5/frontend/controller/relay.php(33): Api_Interface_Collapsed->relay('admincp/user.ph...')
#14 /home/dh_b4nae5/dh_b4nae5/2015/index.php(75): vB5_Frontend_Controller_Relay->admincp('user.php')
#15 {main}

Any thoughts here?
Thanks,

EDIT: Version 5.6.4 Patch Level 1