Issue: Problem with Chapters /Art.Lanuguage

Database error in vBulletin 4.0.4:

Invalid SQL:

		SELECT visible, forumid, thread.threadid, title, open, postuserid, chapter.dateline, 
			prefixid, 
			parentlist, childlist, MAX(chapter.chapternumber) AS chapternumber
			, art.languageid
		FROM vb4_vault_book AS book
		INNER JOIN vb4_thread AS thread ON (book.bookid = thread.threadid)
		LEFT JOIN vb4_vault_chapter AS chapter ON (chapter.bookid = thread.threadid)
		LEFT JOIN vb4_vault_article AS art ON (art.threadid = chapter.threadid)
		WHERE book.bookid IN (56012)
		GROUP BY thread.threadid;

MySQL Error   : Unknown column 'art.languageid' in 'field list'
Error Number  : 1054
Request Date  : Sunday, July 18th 2010 @ 03:48:46 PM
Error Date    : Sunday, July 18th 2010 @ 03:48:47 PM


Classname     : vB_Database
MySQL Version : 5.0.91-community