Other mistake: In the final scene where the kids are being asked what was the scariest part of the trip, Data replies "The octopus was scary." But the scene containing the octopus was deleted from the movie. The scene is shown on the DVD's deleted scenes. (01:47:00)
Other mistake: The car that almost runs Marty over has the vehicle registration plate of 6S 48405. Later on, when Marty is hit by Sam, Sam's car has the same plate. (00:35:49 - 00:42:02)
Other mistake: When Marilla shows Anne to her room, Anne's hat brushes Marilla's face. As Marilla turns you can plainly see that she is having a hard time trying not to burst out laughing.
Other mistake: During the eye exam, Daryl recites the eye chart but does not get it correct.
Other mistake: During the climactic moment when they're defeating the book, Jason shoves the key into the lock, sealing the evil within. However, he shoves the key into the lock upside down.
Other mistake: In the beginning, as Pee-Wee waits for the crown in his dream, a bell starts ringing, and everyone leaves, leaving him alone. After all the photographers are gone, there is one more flash from a camera before the transition to his room.