Continuity: During the Yankee Stadium sequence, an elevated train goes by in the background in one shot, but disappears before leaving the frame in the next shot.
Continuity: When Buster breaks the glass in the door for the first time, the remaining pieces change in between shots.
Continuity: As Buster goes to the newsreel office for the first time, we can see the same girl leaving the building in consecutive shots.
Revealing mistakes: Right before the last time the glass in the door is broken (when the wind shuts it abruptly), it is possible to see that it's already cracked to ensure that it will break when the door slams.
Revealing mistakes: Near the end, when Sally and her Boss are watching the part of the tape filmed by the monkey, the shots of Luke bringing Sally to land change, as if the monkey had moved the camera. There's also some movement to fit the characters better, which couldn't be managed by an animal.