I had the same problem. It looks like there is a problem with the update from version 4.0.3 to 4.0.4.Indigo error box appears every time Kodi is launched. Everything is up to date with latest versions of all tools and resources etc. I cannot get any playback from any feed.
20:59:15.662 T:1673524128 ERROR: EXCEPTION Thrown (PythonToCppException) : -->Python callback/script returned the following error<--Post a log. See my signature on how to do this.
I'm running Indigo 4.0.6 on both my 2nd and 3rd generation Fire TV's.
I also get this error, but finally used PASTBIN to copy/paste the log. Not easy on FIRE TV.**Edit - I followed the instructions to 'upload an error log', but I keep getting 'TVA error uploader' and Indigo won't let me enter en email address.