vb upgrade Error

[almac]

Forum page looked perfect till i logged in then got error page with box inside containing bellow error. what do I do?

Database error in vBulletin 3.6.2:

Invalid SQL:


SELECT COUNT(postid) AS count
FROM post AS post
LEFT JOIN deletionlog AS deletionlog ON(deletionlog.primaryid = post.postid AND type = 'post')
WHERE visible = 0 AND dateline > 1161302547
AND deletionlog.primaryid IS NULL;

MySQL Error : Column 'dateline' in where clause is ambiguous
Error Number : 1052
Date : Thursday, October 19th 2006 @ 08:15:14 PM
Script : http://www.postforprizes.com/login.php?do=login
Referrer : http://www.postforprizes.com/admincp/index.php
IP Address : 84.43.111.230
Username : posttrauma
Classname : vb_database