I like your plugin a lot; working with this plugin is faster than 'Post Thumbnail Editor' for instance.
I've got one issue, however. I try to hide two of the four image-sizes of a certain post-type in the plugin settings. I ticked the right checkboxes. But, when editing an image crop via the Media Library I still get ALL four sizes in the right column.
How come this doesn't hide the sizes, as set in the settings page?