I just installed the Custom Post Type UI for the very first time and both the "Manage Post Types" and "Manage Taxonomies" are completely blank! The only things that shows up on these two pages are the Admin side-menu, the WordPress Admin-bar, the title of the page, and the "Deleting custom post types/taxonomies does NOT delete any content..." message. I found no errors in the PHP error log. I'm using Custom Post Type UI 0.7.2 and WordPress 3.3.2. Please help me!