I have done some searching but couldn't find anything conclusive. If I launch MPC-HC as an external player, the files play fine but I am greeted with a MP error message that reads "Unable to play file. Video codec X Audio Codec Y" where X and Y are the actual codecs in the file being played. Rather than trying to list every one of the billion options selected and defined in MP, does anyone know of any that might cause this or at least somewhere to start looking?