Continuity mistake: After Candy and the stunt man quit the movie, Mr. Maxwell says he has to withdraw his job offer to the gang as it's too dangerous. As the gang is shown, Scooby is sitting in front of Shaggy and Fred. It cuts to a close up of him as he gets excited about this, and suddenly Fred and Shaggy have vanished. (00:06:10)
Continuity mistake: When the Hooded Claw tries to kill Penelope, by tying her to a stage coach that is calculated to hit the passing train, The Anthill Mob end up on the track. The train runs them over which flattens the car and Pockets uses a spatula to get the car off him. When the car pops back into its original shape, Pockets is supposed to be lying flat on the railroad, but he can be spotted in the car.