Continuity mistake: At the start of the film after the crazy guy is pushed out of the room Sara says, 'I just need to send a quick e-mail.', and when you see her type it in there is a really long word or sentence on the screen but in the next shot close up there is just the word 'Deckard'. (00:19:40)
Continuity mistake: When you see Sara riding her moped up on the road on the way to the meeting with Freddy the sky is blue and dark but when you see her enter the door to the room you can see in the background sunlight coming in from the windows onto the walls. (00:20:50)
Visible crew/equipment: When Michael Myers enters Harold's room at the institution and hands over the knife Harold says, "Michael Myers". If you look carefully on the wall on his right you can see shadows of camera equipment and wiring and also when he is walking past the window you can see a reflection of a camera. (00:14:45)
Audio problem: After Michael is hung by the camera cord Sara receives a message from her palm pilot saying, 'HE'S STILL ALIVE'. The palm pilot beeped before she got the message. (01:11:10)
Continuity mistake: When Jen's head is on the floor you see the view from her attached camera is facing Sara, Rudy and Jim but when you see Jen's head on the floor the camera is in a position where it is facing straight at the floor. (01:01:25)
Continuity mistake: When Michael first gets his head cut off by Laurie the eyes of the severed head are clearly wide open. (in H20 and in flashback scene) Then when they remove the mask from the head, not only is the mask suddenly and noticeably different, but the eyes are now closed.
Revealing mistake: At the start after the main title appears you can see the outside of Haddonfield University and you can easily tell that the building is a digital composition. (00:16:10)