Ayuda! Error Incorrect file format 'sigpic'

Database error in vBulletin 4.1.8:

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 AS avwidth,customavatar.height AS avheight,
            spamlog.postid AS spamlog_postid,
            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, editlog.hashistory,
            postparsed.pagetext_html, postparsed.hasimages,
            sigparsed.signatureparsed, sigparsed.hasimages AS sighasimages,
            sigpic.userid AS sigpic, sigpic.dateline AS sigpicdateline, sigpic.width AS sigpicwidth, sigpic.height AS sigpicheight,
            IF(user.displaygroupid=0, user.usergroupid, user.displaygroupid) AS displaygroupid, infractiongroupid
            
            
        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 JOIN customavatar AS customavatar ON(customavatar.userid = user.userid)
        LEFT JOIN spamlog AS spamlog ON(spamlog.postid = post.postid)
            LEFT JOIN deletionlog AS deletionlog ON(post.postid = deletionlog.primaryid AND deletionlog.type = 'post')
        LEFT JOIN editlog AS editlog ON(editlog.postid = post.postid)
        LEFT JOIN postparsed AS postparsed ON(postparsed.postid = post.postid AND postparsed.styleid = 7 AND postparsed.languageid = 2)
        LEFT JOIN sigparsed AS sigparsed ON(sigparsed.userid = user.userid AND sigparsed.styleid = 7 AND sigparsed.languageid = 2)
        LEFT JOIN sigpic AS sigpic ON(sigpic.userid = post.userid)
        
            
        WHERE post.postid IN (04802851,4802853,4802856,4802886,4802893,4802911,4802917,4802921,4802941,4802971,4803101,4803309,4803324,4803339,4804427,4804507,4804702,4804933,4804953,4805789,4806478,4807576)
        ORDER BY post.dateline;

MySQL Error   : Incorrect file format 'sigpic'
Error Number  : 130
Request Date  : Monday, April 1st 2013 @ 04:33:46 PM
Error Date    : Monday, April 1st 2013 @ 04:33:46 PM
Script        : 
Referrer      : 
IP Address    : 
Username      : 
Classname     : vB_Database
MySQL Version : 5.1.53-community