Visible crew/equipment: The fake spider that suddenly swings down in front of Allison in the hallway, and the one "thrown" at her as she walks through the mall at the end, are obviously prop pranks, as you can hear a fake laughing in the background during the latter. Very badly covered up by barking dogs and something whining.
Chopping Mall (1986)
1 visible crew/equipment mistake - chronological order
Directed by: Jim Wynorski
Starring: Kelli Maroney, Karrie Emerson, Russell Todd, Tony O'Dell
Factual error: When the first robot is trapped in the lift, the teenagers shoot the propane tanks on top of the lift in order to get them to catch fire and explode, killing the robot. However the teens are firing pistols or shotguns, and these do not contain incendiary ammunition, which is what is required to make the propane to catch fire.
Ferdy: Look, I'm sorry if I made you angry, Linda.
Linda: It's not you, Ferdy. I'm just not used to be chased around a mall in the middle of the night by killer robots.
Trivia: Paul Bartel and Mary Woronov play Paul and Mary Bland in this film. These are the characters they played in the film "Eating Raoul."