database error

[jkwasn01]

all of the sudden im getting Database Error when I try to view forums.. i can view the main page ok.. http://www.thevhub.com/forums Any ideas??

Database error in vBulletin 3.6.4:

Invalid SQL:

		SELECT 
			IF(votenum >= 1, votenum, 0) AS votenum,
			IF(votenum >= 1 AND votenum > 0, votetotal / votenum, 0) AS voteavg,
		 post.pagetext AS preview,
			thread.threadid, thread.title AS threadtitle, thread.forumid, pollid, open, replycount, postusername, postuserid, thread.iconid AS threadiconid,
			thread.lastpost, thread.lastposter, thread.lastpostid, thread.dateline, IF(views<=replycount, replycount+1, views) AS views, notes, thread.visible, sticky, votetotal, thread.attach,
			hiddencount, deletedcount
			, NOT ISNULL(subscribethread.subscribethreadid) AS issubscribed
			, deletionlog.userid AS del_userid, deletionlog.username AS del_username, deletionlog.reason AS del_reason
			
			, threadredirect.expires
			
		FROM thread AS thread
			LEFT JOIN deletionlog AS deletionlog ON(thread.threadid = deletionlog.primaryid AND deletionlog.type = 'thread')
			 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 threadredirect AS threadredirect ON(thread.open = 10 AND thread.threadid = threadredirect.threadid)
			
		WHERE thread.threadid IN (0,644,565,541,235,29,329) 
		ORDER BY sticky DESC, lastpost DESC;

MySQL Error  : Can't open file: 'post.MYI' (errno: 145)
Error Number : 1016
Date         : Friday, May 18th 2007 @ 03:40:33 PM
Script       : http://www.thevhub.com/forums/forumdisplay.php?f=19
Referrer     : 
IP Address   : xx.xxx.xxx.xxx
Username     : Xp
Classname    : vB_Database

Thanks!