To help you better I would need more information, you might try uploading the tools.php script to the admincp and using that, but honestly I think your best bet is to ask at vbulletin.com. I don't have a good way to help right now, but I will try and look later, like I said vbulletin.com
http://www.vbulletin.com/forum/showp...23&postcount=1
I also found this link which seemed to relate to your problem. Hope this helps!