This plugin looks AMAZING, but for some reason it's not working. I've tried applying the filter via the Media Library, at the point of image upload and I've tried applying the filter at the point of inserting an image into a post.
I'm running the latest version of WP as well as the Genesis Framework. Are there any particular permissions the plugin needs to operate correctly?
p.s. I downloaded the zip of the plugin thru Github, but got a fatal error or install. I installed the version in the WP repository and it installed just fine - FYI.