I've got a web project in VS2013 Ultimate where add scaffolding screen isn't loading the DBContext objects into the window. See the following image. The project has 2 EDMX files that have EF6 generated DBContexts. One of them is within the web application the other is in a separate assembly.

I can't for the life off me figure out what is going on. I'm about to crack ILSpy and pull the MVC Scaffolding apart to see why it isn't working but I thought I'd ask here first. Just to cut some people off at the pass, I've already done the safe mode / clean & rebuild / restart VS and nothing has changed the behaviour. I have a separate, testing solution that has this working but for some reason this solution is fubar.
Thanks in advance