We just transitioned to a new computer, always a pain, first Sunday had very few problems, second Sunday there were no backgrounds, themes, behind the song words.  They appeared in the screen view on the computer but not on the actual screen.  Brought previous week's program up and those backgrounds appeared.   Two different operators but we work closely together and cannot see what we might have done differently.   Added a group of new photos to the image file and then moved to the themes file as we have always done.  The ones on the first Sunday were newly imported as well.