[Smoothie]

from the bottom of the install text:

Hint:
In banuser.php at line 10:
if ($bbuserinfo[userid]!=1 and !$ismod=$DB_site->query_first("SELECT * FROM moderator WHERE userid=$bbuserinfo[userid] and forumid=2")) {

This is the permcheck if the user who tries accessing this file is authorized. In this case if the user ist not the administrator who was createn by the vbulletin-installation and is not a moderator of forumid 2, the script will quit. Change it to whatever you want. In Example to allow all moderators access delete lines 10-13 from the script.

I know, this hack is not "the best way" to code something, but it works

Are you userid 1?