Hello Harry,
I'm afraid there's nothing wrong with the subtitle files as such and I've no problems whatsoever of playing them.
So I really don't have a clue what may cause your problem at the moment. If I think of something I will certainly come back on this.
Sorry, not being able to help you right now.
(Dus als ik nog een helder idee krijg, dan kom ik er uiteraard zeker nog bij je op terug!)