After Android 6 rolled out I have several issues with apps that were working perfectly before (Olympus app or Autostitch won't even start, for example). I am trying to perform a system repair but can't do it. When I try to start it a window with a progreess bar comes out and reads "Initialazing". the progress bar goes up and down (!) randomly and stays there forever, while nothing happens on the tablet. I have rebooted both tablet and PC, no change.