I have a m009 google android 2.2 7" tablet. I have converted videos over to the mp4 and they worked just fine. I loaned my tablet out and now I have it back and when I go to play some new videos that I just converted and put on my sd card, it gives me an error, "can't open". The movies that I had on the sd card before I loaned it out will still play, but nothing new that I have added since then. Did they change a setting or why will the new ones not play? I have tried probably 20 different movies and different settings and nothing works....