So this weekend I wanted to control my nDisplay with my head. Thank you for the plugin! I’ve updated it for 5.1 There you go!
Just create your scene then in the same folder as your uproject, create a Plugins folder and extract this file to that folder. The folder that gets extracted is called freetrack. This folder NEEDS to stay freetrack and all the contents stay within it. I tried changing it to frreetrack5.1 and that broke the scene and it kept crashing. DO NOT DO THAT!