Continuity: In the drug store, Caleb's necklace repeatedly disappears and reappears between shots.
Errors made by characters (possibly deliberate errors by the filmmakers): When Caleb, Reid, Pogue, and Tyler are in the room reading the book of Damnation, Sarah calls Caleb about Kate. Later on in the dorm room, after Sarah's woken up from the spell, she tells Caleb she told Pogue about Kate.
Continuity: When Sarah, Kate and Chase are returning to the dorms after the party from the beginning of the movie, Kate's hair is in front of her shoulders. In the next scene, when Chase knocks a spider off her shoulder, her hair is already pushed back.
Errors made by characters (possibly deliberate errors by the filmmakers): When the doctor is talking about what is wrong with Kate, he says "It's like she was bitten by hundreds of insects, like spiders." Spiders aren't insects and a medical doctor should know that.
Continuity: In the scene where Sarah is in the library, Kate comes and leans on the table next to her. When we first see her close up, her ponytail is dangling by her head, it zooms out and the ponytail is on her back, again it zooms in and is in front of her face, zooms back out and it's on her back again.
Continuity: When Caleb is in his bed his perspiration disappears in the next shot after he wakes up to the ghost.
Revealing mistakes: The string on Steven Strait's harness is visible during the battle in the barn when Caleb and Chase are throwing farm equipment at each other.
Continuity: In the last scene when Caleb raises his hand to mend the windscreen, just as the windscreen is mended near his raised hand, his hand rises again from the bottom displaying the 'millisecond' overlapping mistake of the film editor.
Continuity: While driving Sarah to his family's first settlement house, Caleb points out the Old Putnam Barn. While they are driving it is not raining, but during the shot of the barn it is raining pretty heavily (probably due to the weather during shooting). The next shot is back to normal with no rain.
Continuity: When Caleb leaves the barroom dance with Sarah, he asks her to get his jacket, then rushes off outside. When he comes out the door, he is wearing the jacket.
Continuity: In the scene where Kate is talking to Caleb in the store we can see Sarah step out from behind an isle and in the next shot she steps out again.
Audio/visual unsynchronized: During the scene at Nicky's, Pogue tells Caleb that Reid and Tyler are there and Caleb responds with, "Great, that's trouble." But when he says that's trouble, his lips don't actually move.
Audio/visual unsynchronized: Chase tells Pogue and Caleb that he heard they were swimmers while the pair are playing foosball at Nicky's, but his mouth doesn't quite match up to the words, almost as if he's yelling it and then it was voiced over.
Miscellaneous: William Danvers III is credited as James Danvers.