[myron]

well, this works only for audio & video, if the language and everything can be detected by mediainfo.
Subtitles unfortunately not.
Maybe you could post some screenshots of the mediainfo page and post your NFO somewhere (or per mail)
We don't have really a logging in there, what gets written and what not.

But this is not really needed anylonger, since XBMC/Kodie always reads this on his own.
see http://kodi.wiki/index.php?title=NFO_files/Movies -> streamdetails comment