I viewed the source code and used the additional information to correct that problem. The user session info is not in global.php anymore, but rather /admin/sessions.php . Easy enough.

Fixed that. It also appears that there is no longer a variable called 'sessionid' . It looks like it is now 'sessionhash' . So I changed that in the hack code.

Now I get the following error:

Fatal error: Call to a member function on a non-object in /home/sites/site14/web/boards/admin/sessions.php on line 70

The online.php file now looks like this:
-----------------------------------------------------------------------<?php
chdir($DOCUMENT_ROOT . "/boards");
require($DOCUMENT_ROOT . "/boards/admin/sessions.php");

$loggedins=$DB_site->query_first("SELECT COUNT(sessionhash) AS sessions FROM session WHERE userid=0");
$guests=$loggedins[sessions];
$loggedins=$DB_site->query_first("SELECT COUNT(sessionhash) AS sessions FROM session WHERE userid<>0");
$members=$loggedins[sessions];

echo "There are currently $members forum members and
$guests guests online. <a href=/boards/index.php>Join us!</a>";

?>
-----------------------------------------------------------------------

So close ... yet so far away! I feel like I'm missing one tiny detail. Can anyone else see what it is?