pi@raspberrypi:~ $ sudo ~/diddyborg/diddyPreview.py Traceback (most recent call last): File "/home/pi/diddyborg/diddyPreview.py", line 29, in camera.remove_overlay(0) File "/usr/lib/python2.7/dist-packages/picamera/camera.py", line 908, in remove_overlay "The specified overlay is not owned by this instance of " picamera.exc.PiCameraValueError: The specified overlay is not owned by this instance of PiCamera pi@raspberrypi:~ $