Doris Day writes in her autobiography that she only encountered trouble or tension on two of her Warner Bros. films, "Young at Heart" and "April in Paris". On "Paris", she writes that leading man Ray Bolger and director David Butler clashed early on, with Butler accusing Bolger of trying to steal scenes away from Day. Doris says that, being a relative newcomer to films, she was unaware of Bolger's tricks and managed to stay out of the line of fire.