[Milhouse]

I have the same problem. If I just press enter on an item I also get ""Playback failed/can't find a next item to play". If I use the context menu and select play, it works. Any ideas?

It's obviously not a widespread problem, which suggest something specific to your setup (addons? skin?) If you can identify the build when this problem started that might help. Otherwise it will need insight from a Kodi developer with experience in this area. If nothing materialises, you should open a ticket on trac.kodi.tv.