Continuity: When Shannon Elizabeth is attacked by the ghost she has scratches on her face, then when they are all sitting huddled in the corner the next shot of her, there are no scratches on her face.

Continuity: At the beginning of the film in the scrapyard, we are shown a car suspended by the grab crane. When the Juggernaut appears and all starts to go wrong, the same car drops and barely misses the psychic. Later, we once again see the car suspended in the grab crane.

Visible crew/equipment: Halfway through the movie (when the gears start moving) the glass doors begin to close. It appears that a set of four hands are closing them in the top portion of the screen.

Continuity: Near the very beginning of the movie, Arthur (Tony Shaloub) trips over his son's scooter and spills coffee on himself; throughout the scene, the stain keeps changing size and location.

Continuity: In the scene where the psychic and the father are walking through the halls carrying the plate of glass as protection, you can see the trees outside blowing in the wind. Earlier, they showed that all the windows in the house closed up, making it impossible to see outside.

Other: When Dennis jumps out from behind the glass wall shield, leaving Arthur behind it and The Hammer and Juggernaut ghosts attack, Arthur bangs the glass yelling as if he can't get out; but the wall shield is only propped up, unsupported and should've fallen straight forwards when he thudded his fists on it.

Other: When Maggie puts the "magic" glasses for the first time, you can see that the light in the right (left to us) lens sparks and then turns off. In the next scene it works fine.

Continuity: When Rafkin is dressed as the power guy, he goes into the basement, then collapses by a glass screen. Between shots the spells written on the glass screen behind him keep changing back and forth.

Factual error: When The Jackal attacks Kathy, it holds her up against the glass with one hand. It then begins to swipe her with both hands, but she still stays up against the glass.

Continuity: When the psychic is being attacked, the father behind the glass goes from his hands up with his head down and turned to standing straight watching the attack between shots.

Visible crew/equipment: During the scene in the library when Matthew Lillard is forced to tell the husband who the 13th ghost is, you can see the directors' face through the glass wall that the husband's laying against in a couple different shots within the scene.

Continuity: One of the ghosts (Juggernaut) appears before it has been released. Juggernaut is the last ghost being released, yet we can briefly see him disappear when Rafkin is looking for Bobby.

Continuity: When Dennis points to the wiritng and says "these are containment spells," the actual handwriting he is pointing at is totally different between shots.

Continuity: When we see Arthur counting the ghosts on his fingers, he has a silver ring on (his left hand.) However when the house is exploding, we see him huddled with Kathy and Bobby, and his left hand has no ring on.

Continuity: When Kathy enters her bedroom she falls backwards onto her bed. In one shot her head is resting on an all-white pillow, yet in the next closeup her head is now resting on a white pillow with gold tassels attached to it.

Continuity: After Kalina whacks Maggie with the book, her glasses change from crooked to straight between shots.

Continuity: When Kalina is climbing through the hole, she gets the flare off of Arthur. However when The Hammer escapes and bounds down the hallway toward Arthur, Arthur is suddenly holding a new lit flare.

Continuity: When Arthur gets mad, he picks up a wooden chair and starts banging the glass. In one shot the actual seat part of the chair flies off, yet in the next frontal shot it is still attached.

Continuity: When Rafkin enters the study where the Lawyer and Arthur are, he puts his toolbelt on the table. During following shots, it constantly changes position.

Continuity: When Kathy is sitting on the bathtub, washing her face in front of the Angry Princess, blood stains around the bathtub, near the drain, keep disappearing, reappearing etc.