Revealing mistake: As the studio executive falls down and backwards in his chair, the wheels attached to the back for the stunt of rolling across the office are visible.
Continuity mistake: As Mel and company go to drive into the movie studio, the windscreen alternates between down and up and back between shots.
Plot hole: Funn, Eggs, and Bell, accompanied by Vilma, enter the theater, ready to show their finished Silent Movie project to the audience. However, only a night previous, Funn, inebriated, is rescued from the gutter, by his friends. A scene immediately following, shows them 'reviving' him with coffee. When did they find ample time to shoot their film? The time frame doesn't add up.
Revealing mistake: While Funn and Bell are warding off their attackers by throwing Coke cans at them from the machine, Eggs is busy rewinding the retrieved film reel around his body. However, when he's done 'winding', it's obvious the amount of film wrapped around him is significantly less than what was on the film reel.
