The Player.setVideo() is now 404 for me for video IDs that work fine if I set them when initializing.
Here’s an example: https://jsfiddle.net/dkuwzjjo/1/
When you click “Try a different video” it will call “player.setVideo()” and if you look in the console and network inspector you get a lot of 404 errors. Also, it plays some weird video by default after all these errors.
This is a new issue, please advise.