@donnacha - Yep. Actually, I noticed your comment and deleted it through the AEC interface so that does work. I might have done it before you though so perhaps that's why you saw an issue. As for editing, it's a known issue. I created a support thread yesterday and am awaiting a response.

http://wordpress.org/support/topic/clicking-the-edit-link-results-in-a-blank-popup?replies=1

I'm thinking about removing all traces of AEC and starting over to see if that solves most of the problems. I really like everything AEC has to offer and I've yet to see any other plugin come close to its feature set. I hope Ronald finds a way to continue working on it or sells the plugin to a different company that will spend time on it.

But to test out your theory, I've gone ahead and deactivated AEC for the time being. Lets see how that works.