Using Caster on Windows 10?

I am struggling with creating a very user-friendly HTPC setup, that has an interface that even a non technically-inclined person can get. I have used Plex for a while, and would like to stick with that, but launching things like Netflix from within a Media Center has proven… challenging.

I found the Caster channel, and decided to give that a try, but by the time I got to locating the filepath to the Windows 10 Netflix App, I hit a brick wall. Nothing like a user friendly experience!

Has anyone had any luck getting a Windows 10 app to launch from inside Plex? If so, can you point me to a guide?

http://winaero.com/blog/exclusive-how-to-start-a-modern-app-from-desktop-without-going-to-the-metro-start-screen/ the guide says windows 8 but it still applies to win10. I find that caster is unreliable when it comes to command line arguments. My soltuion was to create an .exe using autohotkey with the appropriate command line arguments.