Try this...
change this
Code:
// ######################### REQUIRE BACK-END ############################
GLOBAL $parser;
require_once('./includes/class_bbcode.php');
require_once('./global.php');
$parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list());
to this
Code:
// ######################### REQUIRE BACK-END ############################
GLOBAL $parser;
require_once('./includes/includes/init.php');
require_once('./includes/class_bbcode.php');
require_once('./global.php');
$parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list());
Of course, you may have to edit the links to make them point directly to where the files are located based on this file's location.