I'm glad you were able to figure it out, and yeah to be honest the error message is very vague

I guess you were right and it was related to automounting the hard drive.

We’ll see if I encounter the issue again but it seems solved for now🤞

I installed Open Wizard and cleared the cache with no success, but I think I found where the problem was coming from.

I ain’t sure yet and we’ll see if it happens again, but setting automount for the hard drive probably changed the path and Kodi couldn’t find the movie related to the thumbnail in the library anymore.

If it was just this, the error message should have been clearer to be honest..

It's directing you to the kodi.log if that file is empty you have an issue outside of Kodi. It's usually quite verbose, maybe it can't write to the directory

I'm excited about having an impressive digital library with all the blurays/dvds I've bought and ripped over the years!

Btw not sure if you know this but you can add stubs to your library pointing to discs. When you try to play one of these stubs it'll direct you to insert the associated disc.

It does sound like a cache problem

I would check file, folder, and mount point permissions. I don't know how kodi works, but my instinct says check those first.

That's definitely annoying though I'm glad it got figured out

Thanks for the suggestion. I figured it might be one cache or other, so I tried switching UI theme temporarily. When I changed back to Estuary, the thumbnail rows were back. Except somehow my entire TV library had been marked as watched... 🤷

This sounds similar to what happens to my RPi LibreElec setup from time to time. It seems to be a slow connection or the RPi booted faster than it could fetch the info. Typically restarting the device will fix it, waiting for some time and switching between menus, or watching content and then going back to the menu will have given it time to catch up.

Maybe if your icons are being displayed from Trakt or Umbrella/Seren/etc. maybe try logging back in or updating the addon

Ah, sorry. It's a LibreElec install of Kodi, not Android. Tried rebooting fwiw, no luck.

quit the program, stop the program in android, clear the cache (not the data) , start it again.