JSON Playlist Error - Not a valid RSS Feed
I'm trying to set up a JSON playlist, and followed the example given at https://support.jwplayer.com/customer/portal/articles/1406722-external-playlists-and-feeds and am getting a strange error, "Not a valid RSS feed". Everything seems to be the same from the example other than the files, and it's not working.
Any ideas? Example site http://goo.gl/skUBn0