Subtitles not working

Recently I decided to watch a few tutorials and read a few things about the best way to go about it. They all pointed to going into the video settings and setting up a default movie and tv subtitle add-on, more specifically Opensubtitles.org. I followed every step and no matter what I do or what adjustments I make my subtitles do not appear on the screen. I have no problems downloading them, I get no error messages of any kind but after the download screen disappears and I press play nothing appears. I am using Exodus on a Matricom G-Box