It works great except some movies can be played
Please name files and there format, would help if you told us how you installed your relevant codecs, playback should have nothing to do with this plugin if it recognises them as a valid format.
Can they be played in MP Movies!! for instance.
Regards
the movie that it can't play is Saving.Private.Ryan.720p.HDTV.Premiere.DTS.x264-ESiR.mkv
I use k-lite codec to watch such that movie. It's not that it can't play all MKV movies, it just some movies so I guess there's nothing to do with either codec or the player