Factual error: During the credits, as the house is shown, a paper wasp nest is shown hanging from the eaves. Crawling all over it are honeybees, which do not live in paper nests.
Continuity mistake: After Jimmy draws the pentagram on his hand to connect the dots, he holds up his hand to show his sister and the drawing is different from the one shown before. The outline is much darker.
Visible crew/equipment: When Jack and Jackie are waiting in the car for Dr. Becker, Jack is looking in the side mirror. When Jack sees him he opens the door, a camera is visible in the side mirror.
Continuity mistake: Sean is standing by a window when Ray throws a chain through it and the chain wraps around Sean's neck. The following scene has Sean being pulled through the window, breaking away all the glass and the wooden dividers. When the scene cuts to the outside and the kids looking at Sean being pulled away, two broken wooden window sections have managed to regenerate and are visible from both the right and left sides of the window frame.
Factual error: Throughout the movie, as the train speeds through the starry night, the constellation Orion is recognizable (presumably rising) on the horizon. Oddly, Orion never rises any higher as the night progresses. Also, at the latitude of the southern U.S., the constellation would not rise (or set) vertically as shown but would be tipped at a considerable angle.
Continuity mistake: When the hot blonde gets out of the water she is supposed to be naked, as 5 minutes before we saw her take off her bikini bottoms, but as she walks out you can see she still has her bottom half on. (00:20:55)
Continuity mistake: When Luke brings Caroline back to the house after knocking her out, Violet demands to know where Ben is. In this shot her tears are black because of the mascara, but in the next shot all her blackened tears have disappeared.
Factual error: In order to be electrocuted you need to connect a high voltage to a low voltage. Touching a power line does not get you electrocuted unless you make contact with the ground. So electrocuting the locusts by making them fly against a powerline can not work because they are not 'grounded'.
Continuity mistake: During the final rave scenes, just before the group enters the rave, Jenny is given a regular sized revolver. When she finally shoots Jeremy in the head, the revolver she takes from her pocket is much smaller than the one she was given.
Factual error: in the last scene of the film when the bike drives through the barb wire it cuts through the girls head higher than the guys even though he's lower down on the bike.
Continuity mistake: When Kelly Brook trips over the sofa in the hallway you see her fall and as she gets up you can see a blue thong, 00:07:24. Now when you see her later on in the film when she is sitting by the dining room table with Dennis Hopper eating when she gets up she is wearing purple lacy underwear 01:02:26. Later on when she is fighting the man with glasses from under the bed, when you see him pulling her legs in order to get her out from under the bed you see her wearing black knickers 01:19:32 or you can get a better shot at 01:19:33. Now all the characters of this film are supposed to be trapped and when they're kidnapped the clothes they're wearing should be what they wear for the whole film.
Continuity mistake: In the scene where they ask Tina about what went on while she was in the tunnels, there are several shots where you can see her right hand covered in blood. But when they show a close up of them cutting the same hand to see if she's infected by the fungus, you can see that her hand is slightly dirty but without a trace of blood.