merhabalar yine sitemde bir database sorunu ortaya çıktı yardım edebilir misiniz ?

Database error in vBulletin 3.8.2:

Invalid SQL:

            SELECT
                thread.threadid, thread.title, thread.lastpost, thread.forumid, 
                thread.replycount, thread.lastposter, thread.dateline, thread.prefixid,
                IF(thread.views<=thread.replycount, thread.replycount+1, thread.views) AS views, 
                thread.visible, user.username, user.userid, user.usergroupid, 
                IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid, 
                forum.title_clean as forum_title, post.pagetext AS preview, post.allowsmilie, post.postid 
                FROM thread AS thread
                LEFT JOIN user AS user ON (user.username = thread.lastposter)
                LEFT JOIN forum as forum ON (thread.forumid = forum.forumid)
                LEFT JOIN post AS post ON (post.postid = thread.firstpostid)
                WHERE thread.visible = '1' AND post.visible = '1' AND thread.open!='10'
                AND thread.postuserid IN (1)
                AND thread.forumid NOT IN (0) 
                ORDER BY thread.dateline DESC 
                LIMIT 5;

MySQL Error   : Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (latin1_general_ci,IMPLICIT) for operation '='
Error Number  : 1267
Request Date  : Thursday, May 21st 2009 @ 08:14:33 AM
Error Date    : Thursday, May 21st 2009 @ 08:14:33 AM
Script        : http://***.com/site-kurallari-t2/index.html
Referrer      : http://***.com/site-kullanimi-f3/index.html
IP Address    : 85.110.231.244
Username      : eLiKaPs
Classname     : vB_Database
MySQL Version : 5.0.67-community
ayrıca admin panelinde sayaçları güncellmeye çalıştığımdada alttaki hatayı alıyorum;
Parse error:  syntax error, unexpected $end in /home/empi3/public_html/admincp/misc.php on line 81