- Errors in geography: Scranton is 122 miles northeast of Harrisburg; it does not make sense traveling from Pittsburgh (in the western most part of Pennsylvania) to drop a character off in Scranton before swinging down to take another to Harrisburg.
- Errors made by characters (possibly deliberate errors by the filmmakers): Debra claims one of the cameras that the footage was shot on was an HVX-200 high definition camera. The camera she refers to in the movie is actually a DVX-100A.
- Revealing mistakes: The film supposedly takes place on October 24/25 yet you can hear peeping frogs in the background when the RV stops after running over the first four zombies. The peepers "peep" during their mating cycle from March to May, not in late October.
- Revealing mistakes: When the bald zombie in the warehouse scene is hit in the head with the jar of acid, the acid dissolves skin and bone but does nothing to the shirt he is wearing even though it splashed on both.
- Errors made by characters (possibly deliberate errors by the filmmakers): One of the characters refers, in the start of the film, to Orson Welles' War of the Worlds broadcast as a hoax. In fact, that broadcast was announced as a work of fiction as normal for a Mercury Theater broadcast.
- Errors made by characters (possibly deliberate errors by the filmmakers): When arriving at Deb's parents' house in Scranton, Deb comments that West Virginia (where her parents and brother were camping) is only 100 miles away. Even though we don't know where in West Virginia her family was, the closest point in the state would still be approximately 200 miles from Scranton.
- Factual errors: When the boy zombie is hit by the arrow he's thrown back and pinned up to a wall. HIgh speed projectiles like bullets and arrows tend to quickly penetrate the body. There is not nearly enough mass in such a projectile to transfer the amount of momentum required to jerk a body several feet back and up against a wall. Secondly, the connection of the arrow to the wood in the wall is not strong enough to support the weight a body. The arrow would snap off or pull out of the wall.
- Factual errors: At several points in the movie digital videos are shown to break up as an analogue signal would. This is inconsistent with the way digital video breaks up as it tends to go blocky.
- Errors made by characters (possibly deliberate errors by the filmmakers): At one point a radio report says that deaths will rise at four times the rate in eight days, and by a hundred percent after ten days, as if this is even more. However, to rise by a hundred percent only means that it doubles.
- Revealing mistakes: At approximately 17:30 into the movie, an oncoming car beeps and passes by the van where everyone is introducing themselves. As we look at the passing car, its headlights reveal outside that the trees aren't moving and the van we're in is actually stationary.
- Revealing mistakes: When a camcorder shows the blinking 'battery low' symbol, it doesn't actually film it and save it on top of the video, although we may be able to hear the beeping noise.
- Factual errors: When the bald zombie is splashed with acid, it eats away half of his head within seconds. A splash of very strong acid will only burn the skin. To dissolve half a head would take soaking in gallons of acid for a very long time.
- Revealing mistakes: The police officer zombie's skin is badly burned, yet his clothing and hat somehow remains intact and unburned.
- Plot holes: When entering Debra's house, the alarm had not been tripped. Later, we find her family roaming around inside the house; their presence would have set off the alarm.
>>> WARNING: Here Be Spoilers <<<
Goofs below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- Continuity: SPOILER: Just before Andrew Maxwell takes the gun away from Ridley Wilmott you can clearly see Mary Dexter (or a member of the crew) adjusting her hair, even though she is dead.
- Revealing mistakes: SPOILER: When Maxwell shoots Mary after she became a zombie in the hospital, there are no shells ejected from the pistol.
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