الويب العربي - vBulletin Database Error!

الرسالة دى بتيجى على ايميل ادمن المنتدى وبكميات كبيرة جدا كل يوم تقريبا ممكن حد يفيدنى ويقولى دى سببها اية Database error in vBulletin 3.5.4:Invalid SQL: SELECT post.*, post.username AS postusername, post.ipaddress AS ip, IF(post.visible =2, 1, 0) AS isdeleted, user.*, userfield.*, usertextfield.*, icon.title as icontitle, icon.iconpath, avatar.avatarpath, NOT ISNULL(customavatar.userid) AS hascustomavatar,customavatar.dateline AS avatardateline,customavatar.width ASavwidth,customavatar.height AS avheight, deletionlog.userid AS del_userid, deletionlog.username AS del_username,deletionlog.reason AS del_reason, editlog.userid AS edit_userid, editlog.username AS edit_username,editlog.dateline AS edit_dateline, editlog.reason AS edit_reason, post_parsed.pagetext_html, post_parsed.hasimages, IF(displaygroupid=0, user.usergroupid, displaygroupid) AS displaygroupid FROM post AS post LEFT JOIN user AS user ON(user.userid = post.userid) LEFT JOIN userfield AS userfield ON(userfield.userid = user.userid) LEFT JOIN usertextfield AS usertextfield ON(usertextfield.userid = user.userid) LEFT JOIN icon AS icon ON(icon.iconid = post.iconid) LEFT JOIN avatar AS avatar ON(avatar.avatarid = user.avatarid) LEFT JOINcustomavatar AS customavatar ON(customavatar.userid = user.userid) LEFT JOIN deletionlog AS deletionlog ON(thread.threadid =deletionlog.primaryid AND type = 'thread') LEFT JOIN editlog AS editlog ON(editlog.postid = post.postid) LEFT JOIN post_parsed AS post_parsed ON(post_parsed.postid = post.postid ANDpost_parsed.styleid_code = -1 AND post_parsed.styleid_html = -1 ANDpost_parsed.styleid_php = -1 AND post_parsed.styleid_quote = -1) WHERE post.threadid = 180 AND post.dateline > 1151752321 AND (post.visible = 1OR post.postid = 730) ORDER BY dateline;MySQL Error : Unknown table 'thread' in on clauseError Number : 1109Date : Saturday, July 1st 2006 @ 02:16:39 PMScript : http://www..com/vb/newreply.phpReferrer : http://www..com/vb/showthread.php?t=180IP Address : 1111111111118Username :Classname : vb_database