Continuity mistake: As Mr. Fletcher is riding up on horseback to greet Lady Ashley, you can see him riding up next to a parked, red truck, that has the front end pointed away from the house. Keep an eye on that truck, because it will have the front end pointing towards the house, as Fletcher gets closer to Lady Ashley. (00:27:50)
Revealing mistake: After Sophie faints at her bachelorette party, during the next scene it cuts back and forth between shots taking place in two rooms - Donna walking into Tanya and Rosie's room, then Sophie walking into Ali and Lisa's room, and both rooms have the very same cracks and stains on the walls revealing it was filmed in the same room, but with different furniture.
Continuity mistake: In the scene where Carrie and Big are in bed (Carrie is reading the Love Letters) the library card Carrie uses as a bookmark keeps changing position. She opens the book and holds the card behind the book cover, then when you see a close-up of the text you can see the card is being held inside the book. Then it's back behind the book cover. (00:22:25)
Continuity mistake: When Helen and Jacob walk out from under the bridge, at the very end of the movie, we see footsteps being made in the metal "sand". When the camera pans to a shot from behind, the footsteps made in the sand are gone.
Continuity mistake: When Rex slams on his brakes after Ian tells him that he met a girl online, the background outside the driver side window is a building with trees around it. The shot then switches to the passenger side. When the shot goes back to the driver's side, the background outside of the window is just trees and other shrubbery, even though the car is still at a standstill. (00:06:25)
Continuity mistake: When the FBI are searching the office, Dacyshyn walks out, sees Mulder, drops the donor bag and runs with Mulder and Agent Whitney in pursuit. The donor bag is rear-facing when he drops it, but in the close-up it's front-facing to show the words "human organ for transplant", and its straps positions also change between all shots. (01:07:00)
Continuity mistake: At breakfast, the morning after Maria has just arrived at her Uncle's house, the uncle calls Maria's father a coward. He has a glass of brown drink in his hand. He's just taken a drink and the glass is 3/4 full. Maria angrily refutes that her father was a hero and the glass, still in his hand, is now full to the brim. (00:19:20)