Plot hole: Holly's camera went back to 1959 with her, but her camera is inside the hatch with the same footage that the soldiers retrieved with her body.
Factual error: On the Miz's certificate of appreciation hanging on his refrigerator, the words "Department of Defence" are visible. "Defence" is the British spelling of the word defense, and any official U.S. military document with that word would have used the U.S. spelling. (00:14:30)
Continuity mistake: Our group of jewelry thieves are on their way to "Zugarramurdi" in a stolen taxicab. The "green soldier" Antonio began to wash the color from his face. Nevertheless you can see, depending on the camera angle, that the green color is sometimes seen on his nasal bone and sometimes not. (00:20:55 - 00:21:30)
Character mistake: In the scene discussing the provenance of the mirror, the girl stated that Sherman marched to the sea in 1865. It was actually 1864.
Other mistake: The last half of the movie is based in France. Mr. and Mrs. Jones are being rescued by a French man that she has been texting. He comes to them on the cliffs in his boat. The flag waving behind them is the flag from the Netherlands not the French flag. They have the same colors but the stripes on the French flag are vertical while the ones on the Dutch flag are horizontal.
Continuity mistake: The Appraiser puts the condemned tape across Dorothy's wrecked porch. The tape from the bottom right to the upper left is the one in the front of the other diagonal line, but then it's the other way around. (00:07:30)
Revealing mistake: When Brooke arrives at the camp to drop off Steph and Chrissy, Chrissy leans out of the car and vomits, but you can see that she's not really vomiting, and is using her hand to cover up the special effects tube.
Factual error: Dido and her husband had 3 children, not two as stated at the end of the movie. Furthermore, she didn't received an inheritance worth 2,000 pounds a year from her father.
Revealing mistake: Before Derek punches the side of the wall, you can see the weakened area of the wall before impact. Look at the color difference.
Visible crew/equipment: When the group are finishing the recording of 'Tell Me if You Wanna Go Home' on the rooftop and Dan and Violet's guitar solos are finishing, the shot begins to pan out. Just before it reverts back to a close up, on the left hand side of the shot a crew member or piece of equipment slips into the shot (the shadow is also visible on the ground).
Visible crew/equipment: When the first car seen in the movie stops, the camera rig can be seen reflected in the hubcap.
Revealing mistake: After Alex shoots the intruder in the head, killing him, a couple of shots later you can see his chest slightly expanding and contracting, showing that the actor was still breathing.
Factual error: The black Range Rover used throughout the movie has the wrong licence plate. The third and fourth numbers on the plate (UK spec licence plate) are '0' and '9' which refers to the vehicle as being a 2009 spec. The Range Rover used in the movie was discontinued in 2006 and was replaced with the face lifted model which the one in the movie is not.
Continuity mistake: At the beginning, the little girl's body changes position. When the trucker finds her, her lips are slightly apart, but when the police examine her body, her lips are closed.
Continuity mistake: When they are discussing whose pinkie gets cut off, Vince grabs Craig by the neck and pushes him against the refrigerator. Craig is first shown pushed against the right hand side of the refrigerator, but whenever the camera is on him for the rest of the scene, he is shown standing against the left hand side of the refrigerator.
Continuity mistake: When Aaron throws the umbrella down it turns inside out as it lands on the floor. A couple of shots later the umbrella can be seen from above and it has turned right side out.
Factual error: The movie takes place in Carolina Beach, N.C. (east coast), and yet a number of times the protagonist, and others, sit on the beach and watch the sun setting over the ocean.
Revealing mistake: Not bad digital effects for a combination "Predator" and "Jurassic Park" monster movie, except that the dinosaurs don't cast shadows about half the time.
Factual error: Near the end, Zoe and Trey battle to the death, Zoe armed with a tomahawk and a knife, Trey armed with a Husqvarna chainsaw. During the battle, Zoe manages to amputate Trey's right hand, with which he was gripping the chainsaw's safety release and trigger (as his left hand gripped the support handle). Bellowing in pain, Trey continues swinging the chainsaw by its support handle with his left hand. Lo and behold, the chainsaw is somehow, miraculously, still revving in-and-out, which is only possible if the safety release is continuously depressed with the palm of the right hand as the fingers rhythmically flex to squeeze the trigger. Of course, with all major tendons in the wrist severed, an amputated hand cannot grip or flex or squeeze anything.
Factual error: Just after Spud gets suspended from school, his mum is looking through a property catalogue of London homes. All the telephone numbers shown start with 020 7. The film is set in 1991, and inner London telephone numbers at that time started with 071, not changing to 020 7 until June 1999.