vbulletin shuts down when parsing bbcode

[KaitenV]

For some reason vbulletin 4.2.1 shuts down when trying to parse bbcode on an external page. I did not have these problems with 3.8.7, and it's too late to downgrade. Please help.

PHP Code:

$forumpath = SRD."/forums"; // path to your forum
    $that_cwd = @getcwd(); // absolute path to this script
    chdir($forumpath);
    $phrasegroups = array();
    $globaltemplates = array();
    $actiontemplates = array();
    $specialtemplates = array();
    require_once('./global.php');
    require_once(DIR . '/includes/class_bbcode.php'); 
    @chdir($that_cwd);
    $bbcode_parser =& new vB_BbCodeParser($vbulletin, fetch_tag_list(), true); 
    $my_text = $bbcode_parser->do_parse("[b]Parse[/b]",false,true,true,true,true,false);
    
    echo $my_text; 


The message it gives is:

vBulletin Message
Unable to add cookies, header already sent.
File: /home/mangahut/public_html/includes/news/vbulletin2.php(8) : eval()'d code
Line: 1
Otaku Helpers Forums

The forums should not show up at all, it should just import the functions and parse text.