[Eric]

vB 4 no longer uses =& new for it's classes. It's not even necessary in PHP 5/5.3

So that line should be changed to

PHP Code:

$bbcode_parser = new vB_BbCodeParser($vbulletin, fetch_tag_list()); 


This line should be changed as well

PHP Code:

 $pdf =& new Cezpdf(('A4')); 


to

PHP Code:

 $pdf = new Cezpdf(('A4'));