[Tolriq]

Maybe my assumption about Eventserver was "too easy" - it's used by both apps and also Yatse uses it. So problem is elsewhere. I've created issue on Yatse forum ( http://yatse.tv/redmine/issues/317 ) and we will see. Tolriq (one of Yatse authors) is also involved in JSon-RPC change in Kodi so he is very well aware of nature of the changes. But right now he thinks if it's something with Yatse or something with Kodi.

I'm the only author And I know quite well Kodi JSON part, the problem is not JSON related and completely Kodi bug there's nothing to adjust on remote for simple basic playing start. Only impact by recent changes is handling specific players and external players.

When remote send a player.open with movieid XXX there's nothing to change at JSON part and Kodi should works accordingly.

And BTW Event Server can't play movies What I suspect is that Constellation add items to playlist and start playlist this use another way internally in Kodi but both ways are 100% valid and should continue to work.