Revealing mistake: Whenever Ralph is driving Travers in the limousine and the exterior of the car is seen in a long shot, there is no one riding in it other than the driver. From every view point of the windows that can be seen, there is no passenger inside where Travers is supposed to be seated.
Revealing mistake: When John attacks the 3 bad guys in the residence area, one of them throws John into the wall which wobbles. (01:00:35)
Revealing mistake: After Alex shoots the intruder in the head, killing him, a couple of shots later you can see his chest slightly expanding and contracting, showing that the actor was still breathing.
Revealing mistake: Toward the beginning of the movie when they go to Pricemart, you can see Benny's written across the back wall in neon red letters. Benny's was the real store where the scene was filmed. (00:07:20)
Revealing mistake: When Brooke arrives at the camp to drop off Steph and Chrissy, Chrissy leans out of the car and vomits, but you can see that she's not really vomiting, and is using her hand to cover up the special effects tube.
Revealing mistake: A reporter is interviewing Jobs using an old analogue tape deck recorder - the reporter says he's recording, and a red light is on the hand held tape deck unit, but the tape and its spools are not spinning - the unit is not switched on. (00:53:00)