MKV playback fails ATV3 Plex 1.9.3 and up



Can't playback MKV files on my ATV3, using PlexConnect and Ubuntu 16.04.
Can't upgrade Plex above 1.9.2, as this is the only version that still works. Looks like the transcoding is failing?
Anyone else have this?


Feel a bit silly now, but managed to fix this by reinstalling PlexConnect from scratch.