Beloved author Meg Cabot has been forced to issue an apology after posting a Nazi GIF to social media. The Princess Diaries author made the technical error while sharing a tribute to her late mother with a poignant scene from The Sound of Music. Cabot shared a clip from the 1965 musical, which saw Captain Von Trapp tear a Nazi flag in half, as it was one of her mother's favorite moments in the film. However, a glitch resulted in some of her followers only seeing a picture of the Nazi flag on Cabot's post - with some fans thinking...