Continuity mistake: In the cabin, the survivor and Howe hear an explosion, and the survivor goes out to investigate. He pulls up a board and unlocks the door, and only closes it after him. When the girl comes up from the basement, the door is closed, locked, and barricaded.
Other mistake: A long-nailed woman types the opening credits in a computer, but in a couple of instances (the Playboy Playmates, for example) you can see her type away when the credits page is already complete and the names are already there. (00:01:00)
Continuity mistake: Madeleine's dress sleeves are pulled back when she's first on campus with Grinshaw. Then, when she meets Danny, they're suddenly down at full length.
Audio problem: Just after Binx shoots Mr. Pyot, Hube says, "Don't touch him!" When Billie Jean bends down, the camera cuts to Hube who reaches for the phone saying, "I'm calling the police," but his lips don't move. (00:18:40)
Continuity mistake: The judge arrives and tells the audience that they can sit down. The guy on the left with a white linen shirt sits and crosses his left leg. Reverse shot, and he is repeating the action, this time crossing his right. (00:03:20)