Continuity mistake: In the scene where the old lady comes out of the cafe and the children come out from behind with the remote control car, she shouts at them to get away. As she turns to cross the road the children turn to follow her. In the next shot when we see them out of the bingo hall they are walking ahead as if they had never turned to cross.
Continuity mistake: At the beginning of the film when the doctor is checking the children he gives the tall kid a yellow lollipop, but when the tall kid sits down on the bus he has an orange lollipop.
Visible crew/equipment: Right after the two reporters die in the cornfield, the movie goes on to a quick shot of Angela's house. In the same shot, her red car passes by the camera. When it does, a crew member is reflected in the car.
Visible crew/equipment: When John stops his car at the school, several crew members are reflected in the side of his car.