Deliberate mistake: In the final battle at the end, Mark Loftmore enters the back room where we see Mr. Lincoln leaning over the body of an older man with a red jacket whom Lincoln has apparently just shot. This same man later appears in the background of at least one shot of the general melee taking place outside in the gallery.
Deliberate mistake: In the scene where Mike is in the car and Chucky attacks him, pulling the skipping ropes around his neck and stabbing a knife through the carseat etc., in all the wideshots of the car driving, the stunt driver wearing what looks like a black woolly hat replacing Mike is blatant. (00:54:15 - 00:55:45)
Deliberate mistake: The photographs that Angela takes off the boys that show the girls naked obviously were not taken outside the cabin, they are far too clear. The fly netting and window would have obscured them. Also, judging by the position of the beds in the photographs it seems like they were taken inside the cabin. (00:32:02)