Other mistake: Jill's shoulder seems to be perfectly fine when fighting with Sydney, even though she stabbed her shoulder earlier. (01:38:00 - 01:40:00)
Suggested correction: Anger and fear can be more than enough to gather enough strength to fight your way out of a difficult situation regardless of how much of a critical condition you are in.
Other mistake: Where did those spikes above and below the rear door come from? They exceed the height of the door.
Other mistake: Father Joe says "You brought me to the wrong house", which seems to be a proof of his psychic abilities. However, one does not need to be a psychic to notice the neighboring house all covered with yellow tape reading "CRIME SCENE DO NOT CROSS." (00:22:20)
Other mistake: When the detective sends the traffic cam footage, a Gmail alert pops up. However, the dad is currently using Margot's computer, not his. He previously logged into Margot's gmail account on this computer so any alerts received would be Margot's mail, not his.
Other mistake: When Larry Crocket runs out of the house in his underwear and gets attacked by Barlow, later when the police find him his clothes are in the car. How is that possible when he ran out of the house with his clothes still inside?
Other mistake: While in Chuck's Cafe, a creepy shadow of a woman enters the camera view and it seems that she is playing the jukebox. No music ever plays in the place. (00:32:00)
Other mistake: While Dennis is editing one of the video tapes, there's one on a table labeled "89" even though the film takes place in 1988.
Other mistake: When Clyne is making the new weapons to defeat the spectrals, at one point he uses a white, hot glue gun like an electric drill, even with added drill sound effects.
Other mistake: After Barry (Ryan Phillippe) is put in the hospital, the four of them are talking about the murder and who tried to kill Barry. If you look at the door to Barry's room it is open - didn't anybody hear them talking about murders and a man with a slicker? (00:43:45)
Other mistake: This mistake happens in the scene introducing the four singing heads on the Australian release DVD. They start singing when Jim and the kids turn the corner. According to the subtitles, they sing "When the cryptos creak and the tombstones quake, spooks come out for a swinging wake..." The subtitles are supposed to read 'crypt doors', not the incomprehensible 'cryptos'. (00:47:40)
Other mistake: There's no way the tip of a mast is strong enough to support an entire swinging ship, even if the latter one is a lot smaller. (01:00:00)
Other mistake: As the police lift the body of the 'dead' hotel clerk from behind the desk, you can see his eyes look around a bit.
Other mistake: In almost every scene when someone arrives at the hotel, the same funny one-seater eco car is driving by. (00:53:15)
Other mistake: Nell's hair is considerably lighter in the scene where it starts moving by itself - clearly CGI.
Other mistake: The wet nurse that cares for the newborn Titus is pregnant when she is hired. She is far enough along to be producing milk, yet doesn't give birth until Titus is a year old.
Other mistake: When George is in the basement, his son starts walking down the stairs. Suddenly a light bulb shatters right next to the boy's head, he screams, and falls violently down the stairs. But when it cuts to George coming over, he's just walking at a normal pace as though nothing happened. (This is just after they move in, before the evil spirits take hold of George, so there's no reason for him not to be alarmed.).
Other mistake: Gary Sinise is in the hotel hallway and sees various characters going into different rooms. The camera goes over the top of the wall and we see him from above as he enters a room. The camera continues to track into the room perpendicular to the hallway. Eventually the camera passes over the back wall of Sinise's room and we begin to see these other characters in their rooms. This is impossible, these rooms are not behind his but on either side.
Other mistake: When Kelvin slices a cucumber he cuts his finger. The way he was attacking the cucumber he would have cut a piece of his finger off but not cut into it. The same happens again at the end of the movie. (00:03:30)
Other mistake: In the scene where Gwyneth Paltrow and Aaron Eckhart are talking about lesbian literature, the Geography of the University is all wrong. They start off walking down outside the Learning resource building (the library), and the next shot of of them travelling up an elevator, before exiting on the third floor of the library. But the elevator they travel in is actually located in the main University building, which is located opposite the library. I should know, I was at the University for six years.
Other mistake: After Jason rams the man through the railing at the top of the stairs, he puts in a new clip. As he falls through the air, he shoots the other guard once. Then, he puts in a new clip when he rises after the fall. After one shot?