Factual error: When the men are playing snooker, they are using modern plastic tipped pool cues.
Continuity mistake: When Will and SA5M are in CBGB's and SA5M uses her phone to take a picture of them, Sa5m's head and eyes have already turned toward the camera when the picture is taken. However, when the actual picture is shown, SA5M is looking directly at Will.
Continuity mistake: Tom receives an e-mail from Summer on day (303). At the beginning of the movie we are told that Tom and Summer met on January 8, so day 303 should be November the 6th, but the e-mail says that it was sent on May 7th, which is day 120.
Continuity mistake: Throughout the scene where the SUV crashes in the woods, Sadie is wearing large dangling earrings. In one quick shot where she is seen sitting in the back of the vehicle after the crash, her left earring is missing. It reappears in the next shot.
Other mistake: As Viggo Mortensen narrates, it's been years since every crop and animal has died. Trees have been dead so long they're rotting where they stand and falling over with a stiff wind or slight tremor. Yet, in the woods, there are always fallen leaves on the ground which ought to have long ago decomposed, rain or no rain. Obviously, they can't sweep out the whole forest to make a movie.
Factual error: At the beginning Scrooge is seen signing Jacob Marley's death certificate in the year 1836. English Birth, Marriage & Death certificates didn't come into being until 1837.
Continuity mistake: In the football match between the Millwall gang and the West Ham gang, the team names switch places on the scoreboard between shots. You can also see the score points switch places throughout the scene behind the Governor and Arthur. (01:16:05)
Visible crew/equipment: In the scene where Buddy is driving Felix to his old friend Charlie, just when the car starts to move, a filming crew of three people and also the camera are visible in the reflection on the car. (00:49:10 - 00:51:15)
Continuity mistake: When Ronnie takes Brandy out to dinner, when she asks him what his medication pills are, he holds them out for her to read, and as the shot changes from him to her, the position he's holding the pills changes from being held upright, to upside down. (00:30:25)
Factual error: Carty and Elvis meet up and are walking up a street. This film is set in 1979 but as they get to the top of the street, top right of the screen there is a modern day Renault Clio car. (00:42:48)
Factual error: The license plate on the sheriff's car when he arrives at the factory is 5Q49926. In California - where the film seems to take place - that is a "Commercial" license plate issued to trucks and commercial vehicles, but law enforcement are issued "Exempt" plates which are 7 numbers.
Continuity mistake: When the tour bus stops at Home Depot, the position of the front wheel changes between shots. Watch the lug nuts and 5 holes around the perimeter of the rim to see how the wheel rotates even though the bus didn't move.
Continuity mistake: Liam loads a stretcher in a van. The interior is a Chevrolet. The outside view is a Ford with a bubble window and drives away. Then the next scene shows the gas gauge on a Chevy dashboard. But the worst is at the gas station. While he was filling the van you can see the "express" tag on the door, which is Chevrolet with no bubble window. In the next frame you see the side of the van. Definitely a Ford and the bubble window is back.
Plot hole: There is a scene when Terrence tricks Big Fate into touching his "lucky pipe". Terrence then plants it at the murder scene in order to rightfully implicate Big Fate in the murders. Terrence then goes to the police station and tells Beniot about his strange feeling that the perpetrator smoked crack while committing the murders, and suggests Beniot comb the scene again. Terrence's fingerprints were all over the pipe as well. He couldn't wipe his fingerprints off without wiping Big Fate's off as well. Since it is a requirement that all police officers have their prints on file and since Terrence isn't the officer to locate the "evidence", how can he explain his fingerprints being all over the pipe? After all that has happened, I would think he would have implicated himself.
Continuity mistake: In the scene in the store, the clock behind Jemma shows the time as 10:20. In the next shot only a few seconds later, the clock reads 10:35. (01:06:40)
Other mistake: Just before the ending credits, this statement appears: "He was buried with full Christian honours, in Westminister Abbey." Perhaps the extraneous comma in that sentence might not be as noticeable if Westminster had been spelled correctly. (01:38:15)
Continuity mistake: When Vivian comes out on the porch with a bottle of soda, the level is way under the label. When she goes down the stairs the level is way over the label on the bottle. (00:42:30)
Visible crew/equipment: In the scene where Jenny's former boyfriend shows her the broken cupboard-door a crew member is reflected in the window over her right shoulder.
Continuity mistake: When Pippa and Herb are having dinner, she hits the table with her fist and wine splatters on his shirt. When he stands up and walks to the bedroom the shirt is spotless.
Plot hole: Every ghost that we see in the house looks the way they did when they died, for example the girl from the film's intro is seen without skin on her face, which happened to her before she died. However, in the final scene when we see Simon's ghost joining them, he looks completely normal, when he should have had a throat slit wound and the carved markings on his skin. (01:31:20)