My brother-in-laws brother made a compilation of pictures of my brother-in- law and sisses wedding which he burned on DVD, my brother-in-law had a bunch of copies made to give away but 1/2 the people who have received one so far complain that theirs does not work, the copy he gave me does not run in my Sony standalone, does not work in my Toshiba either but does work in my Panasonic (all units hooked to a TV) any ideas what is going on and how do I or what do I use to make good copies that work in any machine ?