Database errors ?

[nineteense7en]

Hey,

For some reason I am getting a few database errors. I get this one when I want to search.

Database error in vBulletin 3.8.4:

Invalid SQL:

SELECT post.pagetext AS preview,
thread.threadid, thread.threadid AS postid, thread.title AS threadtitle, thread.iconid AS threadiconid, thread.dateline, thread.forumid,
thread.sticky, thread.prefixid, thread.taglist, thread.pollid, thread.open, thread.lastpost AS postdateline, thread.visible,
thread.hiddencount, thread.deletedcount, thread.attach, thread.postusername, thread.forumid,

thread.replycount, IF(thread.views<=thread.replycount, replycount+1, thread.views) AS views,
thread.lastpost, thread.lastposter, thread.lastpostid
,
deletionlog.userid AS del_userid, deletionlog.username AS del_username, deletionlog.reason AS del_reason,
user.userid AS postuserid
, NOT ISNULL(subscribethread.subscribethreadid) AS issubscribed
, threadread.readtime AS threadread
, tfont, tsize, tcolor, tbold, titalic, tunderline, tstrike, toverline, attachment.thumbnail_filesize AS thumbsize , MIN(attachment.attachmentid) AS attachmentid
FROM thread AS thread
LEFT JOIN user AS user ON(user.userid = thread.postuserid)

LEFT JOIN deletionlog AS deletionlog ON(thread.threadid = deletionlog.primaryid AND deletionlog.type = 'thread')
LEFT JOIN threadread AS threadread ON (threadread.threadid = thread.threadid AND threadread.userid = 1)
LEFT JOIN subscribethread AS subscribethread
ON(subscribethread.threadid = thread.threadid AND subscribethread.userid = 1 AND canview = 1)
LEFT JOIN post AS post ON(post.postid = thread.firstpostid)

LEFT JOIN attachment as attachment ON(attachment.postid = thread.firstpostid AND (attachment.extension = 'jpg' OR attachment.extension = 'gif' OR attachment.extension = 'png'))
WHERE thread.threadid IN
(3350, 3095);

MySQL Error : Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause
Error Number : 1140
Request Date : Sunday, December 20th 2009 @ 08:54:53 PM
Error Date : Sunday, December 20th 2009 @ 08:54:56 PM
Script : http://www.kids.org/forum/search.php?searchid=49103
Referrer : http://www.kids.org/forum/index.php
IP Address : 58.186.219.20
Username : Micheal
Classname : vB_Database
MySQL Version : 5.0.45