Insert into post buttom always inactive

I’m also getting this behaviour with the latest kaltura release. Confirm the JSON error when inserting a video on a post. The AIO is 2.7.

Also noticed that in the settings, when you select the new players as “Allowed Players” and you save, if you return there the players are deselected. The only ones that stay the same are the flash players.

So, apparently there’s something that has changed between the flash players and the HTML5 players. No error is reported on kaltlog or the browser console.

I’m looking into automating the post creation with kaltura content. Exploring the option of an mRSS feed and a post template. If anyone has experience on this or any other ideas to get the desired result and is willing to share, is much appreciated. My WP experience is quite low.