I have some pictures from my go pro camera stored on a external hard drive. I placed them there after downloading my go pro pictures on to a computer desk top.. viewing them and then saved them in the hard drive. They were saved as a pure jpeg picture or a mp4 video. So then I plugged my hard drive in to a new mac computer I bought recently and these pictures suddenly had an xml extension added to them. I am unable to save or open any of the pictures...