Same here on Debian Stretch with libdvd-pkg 1.4.0-1-2 libdvdcss2 1.4.0-1~local libdvdnav4 5.0.3-3 libdvdread4 5.0.3-2 kodi 2:17.1+dfsg1-3
~/.kodi/temp/kodi.log says: 16:11:43.811 T:140050310282112 NOTICE: VideoPlayer: Opening: nfs://10.1.0.243/media/HD/Video/DVDs/Firewall.iso 16:11:43.811 T:140050310282112 WARNING: CDVDMessageQueue(player)::Put MSGQ_NOT_INITIALIZED 16:11:43.811 T:140047609231104 NOTICE: Creating InputStream 16:11:43.895 T:140047609231104 ERROR: Error on dvdnav_open 16:11:43.895 T:140047609231104 ERROR: CVideoPlayer::OpenInputStream - error opening [nfs://10.1.0.243/media/HD/Video/DVDs/Firewall.iso] 16:11:43.895 T:140047609231104 NOTICE: CVideoPlayer::OnExit() 16:11:43.895 T:140050310282112 ERROR: Playlist Player: skipping unplayable item: 0, path [nfs://10.1.0.243/media/HD/Video/DVDs/Firewall.iso] 16:11:43.898 T:140050310282112 NOTICE: CVideoPlayer::CloseFile() 16:11:43.898 T:140050310282112 NOTICE: VideoPlayer: waiting for threads to exit 16:11:43.898 T:140050310282112 NOTICE: VideoPlayer: finished waiting 16:11:43.898 T:140050310282112 NOTICE: CVideoPlayer::CloseFile() 16:11:43.898 T:140050310282112 NOTICE: VideoPlayer: waiting for threads to exit 16:11:43.898 T:140050310282112 NOTICE: VideoPlayer: finished waiting After "apt-get purge libdvdcss2" DVD iso files play fine. Helmar.