yeah, my json file imported, but then it wouldn't display any videos in the channel. And tech support just stopped.. It was taking so much time, like you said, I just gave up and made several DP channels using the basic media element to hold all my content.. I have 4 working channels now. Still all in all Roku has the easiest platform to develop for. Eventually I'm going to learn thier language and write a custom channel.. But first I'm working on visual studio 2016 pro.. I need to make an android and kodi application for the website first..
Now I'm also working on installing wordpress on one of my windows servers to try that guys plugin, plus play with some of the other wordpress features that may compliment some of the things I want to do to modernize my website, figure I'd play with that json file plugin as well when I get some free time, if anything comes of it I'll post the results here..