I'm using the Simple Fields-plugin:
This plugin lets you add attributes to posts/pages and one of the attributes allow the user to upload files. This uses the standard WordPress media modal window.
When I add categories with this (Enhanced Media Library) extension, they show up as drop-down filters above the thumbnails when I add media to the main section of the page/post, but when I use media modal window on a Simple Fields attribute the filter drop-downs don't show. I have the ability to categorize files I upload here, just not filter them.
Do you have any idea why this is, and how it can be fixed?