Continuity mistake: When the bad guys are clearing the mall, the camera follows "Rudolph" as he clears an exit on his skateboard. As he starts to clear the exit a young man with a black jumper with a white top half can be seen on his feet moving away. In the next shot he is sitting down with a bag on a bench and then gets up to leave. (00:39:35)Jockman70
Continuity mistake: When Paul and the guy are fighting next to the air con intakes, the speed that the fan is spinning changes between the close and far shots.
Continuity mistake: When Paul hides halfway in the air duct, his feet are hanging down when seen in the exterior shots. When seen from inside the duct, his feet are tucked up behind him.
Continuity mistake: In the beginning scene, as Blart passes out, another trainee gets off the rope and starts running. The camera cuts to Blart's face for a second, then back to the trainee starting to run. The trainee should have already been running.
Continuity mistake: When Paul leaves the pen full of balls, you can see people in the far left walking. This would not have happened if the building was "secure" as the robbers stated.