In Reply to: Subtitles... posted by gator on Sunday, 1. September 2013 at 11:31 Bali Time:
Maybe before copying they have changed the format of the files. To get subtitles changes to work I think you would need the original dvd format files and if these are changed to fit them onto a memory stick you probably lose the ability to change subtitles so you're stuck with whatever the settings were at copying stage.