Revealing mistake: At the beginning of the funeral for the girl who died in the motorcycle accident, the supposed corpse can be seen breathing. (01:14:35)
Continuity mistake: Jim, driving Scott home, is smoking a cigarette that disappears before he slaps Scott the second time. There is no smoke in the vehicle that would suggest Jim temporarily placed the cigarette in the ashtray. (00:15:09)
Continuity mistake: There is a modern coffee thermos container on the sink by the window during a scene set in the 1930s. In the next shot, it suddenly disappears. (00:46:25)
Factual error: Near the end of the movie, a front view of the overdosing/overdosed twins shows Robert putting the dying twin's head on his lap. A close-up of the dead twin shows blood covering most of the left side of her face and a blue tinge on most of the right side, apparently meant to indicate developing livor mortis (bluish color after death). This twin just died, so it is too early for livor mortis to be visible. Livor mortis is not visible to humans until about two hours after death, but the process does begin sooner (about 20-30 minutes after death). Moreover, the writer failed to show the first stage of death - pallor mortis. The twins were Caucasians with blonde hair, so the dead twin would first turn pale (from blood draining from veins in the skin) about 15 minutes after death. The sudden oozing of blood from the dead twin's forehead was also not an accurate portrayal - she was dead, so her heart no longer pumped blood (so gravity takes over, draining blood). (01:39:58)
Factual error: When Natalie decides to rebuild the carburetor that Keith gave to her, she opens the rebuild kit and starts lying out the parts. The problem is that the kit is for a French Solex type 30 single-barrel carb, and the carburetor in the box is a domestic four-barrel.
Visible crew/equipment: When Yu and his friends have finished dragging Yoko into the van, Yu jumps into the van and closes the door behind him. When he finishes closing the door, the reflection of the boom mic can be seen in the window. (02:44:50)
Revealing mistake: When Ricky and Brandon are on the ferry, the camera shows Ricky reaching down to grab Brandon's butt and then it cuts to Chance and Eddie. If you look closely, Ricky and Brandon are re-creating the scene they just performed.
Continuity mistake: In the scene at the end of the film at his grandfather's empty lake house, Simon first unloaded the wooden Christmas figures from his duffel bag onto a pile of firewood on the dock. He then went into his grandfather's workshop and sawed the scroll off of his mother's violin. With his phone, he took a picture of the severed scroll in his hand with the dock in the background, but the dock was empty.
Continuity mistake: When we first see Agent Holloway viewing the crime scene photos taped to the wall, he is facing camera looking at transparent pictures on a transparent wall (as if we are behind that wall, seeing through it). When the angle changes to see the Agent from behind, the photos are now paper photos on a normal, opaque wall and the pictures are arranged somewhat differently - most notably to Holloway's right near the top where two wider photos are vertically aligned atop and below each other in the second shot when they were misaligned in the first shot by nearly half their width. The transparency versus opaque materials issue is a stylistic choice of the director and not a mistake, but the mismatched alignments is a mistake. (00:11:25)
Factual error: The SS Officer is repeatedly addressed as "Herr Oberst". This is a Wehrmacht rank designation, and could possibly have been correct for them addressing an SS officer, but fellow SS officers would have used the correct term "Standartenführer" (without the "Herr"). On one occasion the lower rank SS officer is address as "Herr Leutnant" which is equally wrong, should be "(Ober)sturmführer"
Continuity mistake: When King is fighting with Lazarus in the bar, Lazarus gets blood near his mouth like you get when getting hit in the face. But when they fight near the white door, the blood is gone. (01:13:00 - 01:18:00)
Continuity mistake: When the mother puts the drawing from her daughter in her pocket she puts it in the left pocket of her jeans. When she takes it out later, she takes it from her right jean pocket.
Continuity mistake: Mike Manador watches his girlfriend Gina drive away in a taxi. Behind him a truck can be seen coming down the street. Mike then steps out into street seconds later, but the truck has vanished. Next shot looks up the street and sure there is the taxi but no other vehicles, and you can see the entire street. (01:41:25)
Other mistake: In the scene of the wedding rehearsal dinner, when everyone is toasting, there are people outside the restaurant's door just standing there looking at how the scene is being shot.
Character mistake: Throughout the movie, all of the drill sergeants and First Sergeant Morley are wearing their drill sergeant badges too low. The badge is supposed to be centered on the right jacket pocket.
Continuity mistake: When Michelle and Leonard are up on the rooftop for the last time, the left side of her hair keeps swapping from being behind to in front all the time.
Revealing mistake: In the opening scene, when Van Damme kicks an opponent onto the boot of a London Taxi Cab, you can see the dent from previous takes.
Other mistake: By the moment that Lea discovers and reads the letter, this, with such typewriting, cannot be written by a six year old boy.
Audio problem: When Pavlov is speaking with the doctor, we hear him finishing a sentence with "say, a doctor, perhaps" but his motionless mouth and jaw show he isn't speaking at all in the side shot. (00:19:00)
Continuity mistake: During the scene that Bo and Sam kiss, his hair changes between shots. From the back, his hair is completely pulled back. From the front, his bangs are down. (01:27:20)