Sally Field has revealed she “drove Robin Williams mad” on the set of their 1993 comedy Mrs Doubtfire by never laughing at his work. The Chris Columbus-directed family classic starred Williams as an actor who disguises himself as an elderly Scottish female housekeeper to continue seeing his children, after he and his wife (played by Field) decide to separate. During an appearance this week on Stephen Colbert’s US talk show, Field recalled that she didn’t find Williams funny while working with him on the film, and that it bothered him. “I would never laugh, ever,” Field said. “And everybody else was laughing and carrying on.” She said that Williams prided himself on making his colleagues laugh, which only increased his frustration. “It drove him mad, actually,” Field added. “It wasn’t funny. It just wasn’t funny. Robin was always trying something different to make me laugh. It was so unfunny.…