You know what, I had just started over again and instead of choosing a blank plugin template I chose a blueprint function library template and it has the same structure you used, so for my own sanity ive gone over the plugin you got to work and my fresh one side by side until they are the same.
I’m going to save all, clean the solution and then build… 
Edit: Unsuccessful, that’s a pity. You’re experience really shows here that you got it to work 
I’ll try opening yours and see if it compiles for me
Edit: So i generated the project files, cleaned and built and got these errors
I’m thinking this is a me problem at this stage in terms of how my visual studio is set up
Also, if it means anything useful, I can’t even open your project (clean download) (scratch that, for once clicking yes actually works and it rebuilds successfully)
