Sandfors and Son, season 2, episode#1 --"The Light Housekeeper". This slipup takes place between 3:15 and 3:53 of the episode. Within the first couple minutes, Lamont brings Fred a cup with a newspaper folded up in it. Fred and Lamont argue about work, they cut to Fred newspaper disappears. They cut to Lamont, then back to Fred 3 seconds later, and there is a new newspaper in his cup.