What's wrong with this query?

[Deaths]

Ok, now the DB error is gone.

But, with this code:

PHP Code:

$getnewposts = $DB_site->query_first("SELECT * FROM " . TABLE_PREFIX . "thread WHERE forumid = 13 ORDER BY dateline desc LIMIT 10 
"); 
$newposts = number_format($getnewposts['count']); 


It just returns a "0", even though I'm absolutely sure there's a new post in the forum 13...