Continuity mistake: When Ginny is in her bedroom, she picks up a tape and her books fall down into a pile. After she changes into her robe and walks to the bathroom, the position of the pile has changed. When she then proceeds to slam her window shut we then see the pile of books once again, which are now not in a pile but are stacked up neatly in rows, and there are many more books in the stack as well.
Continuity mistake: When the last car flies over the drawbridge, its flies right into the ground and the front gets smashed, one headlight breaks and the front left tire flies off. When Ginny runs out of the car after they stop, the tire is back, the headlight is fixed and the front of the car seems totally intact.