UBB.Developers Forums UBB.threads 7 Development How Do I? 5.4.4 SQL Error

Getting this SQL error when viewing the control panel in the friends online section:

SQL ERROR: Unable to do_query: DELETE FROM w3t_Online WHERE O_Last <
You have an error in your SQL syntax near '' at line 4: 2000

Do not get this error when viewing the Who's Online page though.

Here's the section in online.php in question:

// -------------------------
// Delete the inactive users
$html = new html;
$Outdated = $html -> get_date() - 600;
$query = "
DELETE FROM w3t_Online
WHERE O_Last < $Outdated
";
$dbh -> do_query($query);

Looks good to me...anyone see the error or have an idea where to check to fix this?

Here's the URL to the board to see for yourself:
http://www.sweetleaf.cc/wwwthreads/wwwthreads.php

Ok, try this one. Line 914 of main.inc.php looks like this:

$Outdated = $html -> get_date;

Try changing that, to this:

$Outdated = $html -> get_date();