TouchCast Studio: App Mirroring on an external monitor is showing "TouchCast not Active"

In version 1.19.4, we addressed a mirroring issue. The studio application would only show the authoring side of the app, and show an error message "TouchCast not Active" when on the casting side.

To enable all mirroring capabilities, navigate to: 

Settings→ TC Studio (found at the bottom of the list usually) → Toggle off "Limit Screen Mirroring" 

Reset your application and now you should be good to go.