[Zookie]

I just upgraded from 3.8.3 to 3.8.4 PL2 and my forum's home page is displaying as an empty white blank page. I went through possible causes listed at http://www.vbulletin.com/docs/html/blank_pages and I'm wondering if the following is it:

4. You have a bad plugin installed. To disable the plugin system, edit config.php and add this line right under <?php

define('DISABLE_HOOKS', true);

I tried adding that line to my config.php file and the home page now displays. But if I click the Links and Downloads Manager link I get a empty page with the words "No input file specified."

So, is this an issue with LDM or did I screw something up when I upgraded from 3.8.3 to 3.8.4 PL2?