Factual error: It was very nice of the East Anglian Transport Museum at Chappel and Wakes Colne to provide a train for the coder to go home in, and come in to work. The station is even in Suffolk; but of the two lines through the station, one is used by public trains, and the other by historic preserved trains. When the coder gets off her morning train, it is seen passing across points from the museum platform line into the railway museum, rather than continuing up the line to Sudbury, as a public train would. Appropriately, the train is a heritage DMU - a museum exhibit which has not been used on the main line for at least 25 years. So that's three reasons why she's not on a train which actually goes anywhere.
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.
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).
Continuity mistake: After stabbing the bad guy at the beginning, Callahan for some reason pulls back and somehow dives past a door managing to drag in a grown woman who was all crouched down by the entrance. Wonky physics of it aside, the bad guy shoot at him, but shoots just a hole in the door frame. The hole appears to be CGI, and in fact when Callahan shoots back from the bedroom, the hole is gone. (00:01:35)
Continuity mistake: When Turbo is about to go down the curb after nearly getting killed by the lawn mower, you see him lined with the 2, he's on the left side of the 3.
Continuity mistake: The protagonist at the beginning of the movie sunbathes topless.The camera is positioned where the kid is spying her, and in that wide shot she is placing the garment she removed close to her lower half of the body. When he waves his hand casting a shadow over her eyes, the bikini top is in the corner of the towel next to her head. (00:01:20)
Other mistake: Throughout the film, you can frequently see many people's faces blurred, phone numbers blurred, store-fronts blurred, etc. This is because the production could not afford the rights to show these people, places and things, and simply blurred them out.
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: There is a shot in the movie showing the outside front view of the Apple Head Office building. At the bottom of the screen it states the year (1981 or 1982). As the year is posted on the screen, a Chevy Cavalier drives into the shot in the foreground parking lot of the property. The Cavalier's style/shape and front headlights reflect that of a 1992-1994 model car - not a car from 1981 or 1982. (01:04:20)
Continuity mistake: Admiral Hadley's "war room" has a digital clock which the few times we see it is always set at 3:02.
Continuity mistake: When the movie starts and Linda takes a glass of water to her lips, the hand with which she holds the glass swaps between shots.
Continuity mistake: The protagonist is told about the budget cuts that will lead to the library shutting down. During the scene, the strap of his hat keeps going back and forth in front / behind his ear. (00:02:05)
Continuity mistake: In the scene at the beginning where Simon Yam is telling Karen Mok that the case she is working on is closed, as he holds her shoulder to turn her towards the door in one shot, and her hair is completely at her back behind her shoulders, but as he turns her around and the shot changes, her hair on the left side is seen over her shoulder in front.
Continuity mistake: As El Camaleon pulls the Cuba Gooding Jr. face off, there's an unshaven neck with a tattoo visible under it. After the cut, Lady Gaga's face (also presumably unshaven admittedly, but not visibly so) comes to light under a mask of visibly lighter skin tone. (00:45:05)
Continuity mistake: After the fake movie intro, the two guys drive to a secluded place where their drop is supposed to happen. "Cheno", the one in the driver seat, has the right hand down his side and the left hand on the right side of the steering wheel in a pretty unique position. But in the reverse shot, it's his right hand on the wheel. (00:03:00)
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)
Continuity mistake: When Keisha shows the father the painting she made, the father places it on the table over the color palette. Then after Keisha screams in the father's face, the magazine is gone. He sprays her with breath spray and replaces the painting over the color palette. (01:07:00)
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.
Character mistake: Spanish headlines are seen. Some of the a's have the wrong accent on them ("å" instead of "á"). (00:45:25)
Deliberate mistake: The whole premise of the movie is 'artistic license' so to speak; the protagonist signs himself up to the bone marrow donors register, called ADMO in his country (Italy). But he is still a minor, and that is strictly not allowed. Not even with a written consent of the parents as shown in the movie.