Revealing mistake: The stepmother's arm disappears for a split second when she tells her daughters that there is still a chance for them to become the princess.
Continuity mistake: Doc Riedenschneider calls on Cobby in a dark hallway with brick walls and a door in the end with a half-open transom. Through this door, in the adjacent room, there are several gangsters seated a table. They go down the hallway and enter this room. In the next scene they have entered and the seated gangsters are suddenly no longer there. Nor is there a transom over the door. The hallway viewed from this room has white walls now instead of brick.
Visible crew/equipment: When Joe Gillis returns to the mansion, after Betty Schaefer has just revealed her love towards him, when he enters his room, you can see a hand wearing a watch in the mirror. (01:26:50)
Other mistake: A glass is dropped which had drink and one ice cube in it, however two ice cubes are picked up from the spillage.
Factual error: Between Earth and the Moon the crew of the spacecraft have an EVA in which they walk on the ship's metal hull with magnetic boots. At one point an astronaut inadvertently slips both boots off the hull and drifts off into space, helpless. There is a long shot of him drifting away in which his body spontaneously spins around 180 degrees and then stops rotating, which is all a violation of conserved angular momentum.
Visible crew/equipment: You can see Dean Stockwell's harness and guide wire when Kim is hauled off the ledge and up the cliffside.
Continuity mistake: Veta and her daughter are getting out the tablecloth. The daughter mentions Harvey's name and Veta shushes her. Cut back to the table being visible. In seconds, the tablecloth goes from barely unfolded to neatly spread out and straight.
Visible crew/equipment: When Fabian goes into his office after receiving the package, he closes the door and the rest of this shot is through the glass. The camera and its operator (with a white shirt) are visible on the right side.
Revealing mistake: In this scene we see Claudette Colbert and her husband talking. In the background it's obvious the ocean scene is a stage prop, the waves in the sea don't move at all.
Continuity mistake: In the scene towards the end of the film, when three troopers creep into the church, Margaret Mary hits Sandy over the head. When Margaret Mary starts to speak, a ribbon around her neck curiously unravels itself and disappears behind her back .
Revealing mistake: Having been deserted by their porters three white people and a native journey on. During their journey an antelope is shot by Allan Quartermain for food. The sound of the shot is dubbed in as there is no recoil from the high powered rifle he uses.
Continuity mistake: After Bugs Bunny has snipped off Elmer Fudd's pants suspender buttons, you can see Elmer's gun is directly behind him. But when Elmer picks up his gun to try and shoot Bugs, the gun is now by his foot.
Continuity mistake: When Tom traps Jerry in the blinds, he pulls the cord and squashes Jerry. At this point, you can see Tom is holding the cord, but when we Jerry sliding down the blinds in the next shot, Tom is no longer holding the cord.
Continuity mistake: When Rocky is reading his "Life" magazine at his headquarters, the first shot shows him reading the front cover but immediately after that he is reading the magazine with the pages open.
Continuity mistake: When we see Tweety singing, you can see that the bottom of his cage has nothing on it, but when we see Sylvester next to the cage, a door has appeared.
Factual error: This Warner film concerns a pair of post-Mexican War, new-style percussion revolvers stolen from a travelling arms dealer and used in a crime spree. The criminal was unbeatable because of the overwhelming firepower of the guns compared to the single-shot handguns used by everyone else in the film. The title guns used throughout the film were a pair of Colt Dragoon revolvers, in caliber .44. Colt didn't manufacture a .45 revolver until the metallic cartridge era, in 1873.
Visible crew/equipment: During the dance scene, in the ladies room the shadow of the boom mic is seen in the mirror's reflection behind Ann. (01:10:00)
Continuity mistake: At the saloon, Jim brushes off Mr. Walsh and walks out on him. Walsh turns to Francie the bartender, who suddenly is holding the bottle that was undisturbed on the counter a moment before. (00:17:25)
Continuity mistake: When Bugs is sitting on the bench in Central Park with the other out of work actors, he has stubble on his chin. When Bugs accepts Elmer's role as his sidekick in his vaudeville act, the stubble has disappeared.
Continuity mistake: Upon seeing Donald Duck's footprints in the sand, Chip walks the length of one footprint, leaving eight of his own footprints as he goes. He fetches Dale to show him Donald's footprints but when Chip reaches the footprint he walked across, his own footprints have vanished.