Continuity mistake: At the end when all the ghosts are gathered, it shows them rotating. After the counting, some ghosts change position. The torn prince first stands next to the angry princess, but later they are a few places away from each other, just like the horrible child and the dire mother.
Continuity mistake: Cyrus gets thrown onto the slicing wheels and his body parts scatter. We see where his torso is in an overhead shot, but in one side shot of the room his torso has vanished from the same spot. When this happens, not a single drop of blood manages to hit the kidnapped siblings, despite the fact that a man was just dismembered just a few feet above their heads. With nothing stopping such a bloody mess from happening, the pair should not be as clean as they are. The machine is also free of blood. (01:20:05)