Visible crew/equipment: When Ugolin is chasing the rabbit you can see a crewmember duck behind a bush.
Continuity mistake: The pictures on the wall of Calvero's apartment move around during the scenes, particularly the photos flanking the clock on the mantle above the fireplace. A particularly striking example is during the scene wherein Terry recovers the ability to walk. The scene starts off with a photographic-profile-portrait of Chaplin (not decked out as Calvero the Clown) on the left side of the clock and on the right side of the clock, a full-length photo of Calvero the Clown wearing a straw hat, and leaning on his cane, which is held in his left hand. As the scene progresses, the portrait to the left of the clock is replaced by a half-length photo of Calvero the Clown wearing a top hat, with his cane swung across his body, angled up. As Terry realizes she can walk, the portrait re-appears to the left of the clock, and there is nothing to the right of the clock.Richard Lannom
Revealing mistake: In the opening scene the Club's dancers are in full-swing, including the tall, lanky gentleman from Lautrec's famous Moulin Rouge poster, the one with the very angular, extended nose and chin. In several closeups it's very plain that the chin is a makeup appliance: the edge of the appliance isn't blended very well with the actor's real skin.