OSMC on Raspberry Pi 2 Model B Not Playing Video

Im running the latest version of OSMC on my Pi, ive gotten a few addons like SpotiMC working and -its pretty cool. My problem however, is that i cant seem to play video files(mkv,mp4,avi) through OSMC. I am trying to play them locally from a usb thumb drive. When i click on the file in the video player, nothing happens. if i click it enough times, i get a window that pops up and says “Playback Failed: One or more items failed to play. Check the log for more information about this message.”

To get a better understanding of the problem you are experiencing we need more information from you. Please see How to submit a useful support request - General - OSMC for advice on how to help us.