Corrected entry: When Max is revealed as the head vampire, Star makes the realization that "YOU'RE the secret David was protecting" but there is no previous reference anywhere in the movie to a secret that David is protecting.
Corrected entry: Max makes a point of being invited in, and at the end mentions that inviting a vampire in makes you powerless to them. But who invited David, Carlo and the others in?
Corrected entry: During the grand finale when the vampires are in Sam's house, he shoots Dwayne with a bow and arrow and Dwayne falls to the floor pretending to be dead. His left arm is down his side. The shot changes to Sam who is looking at him and then returns to Dwayne whose left arm is now up next to his head so that he can push himself off the floor.
Corrected entry: When Sam is in the cave while the Frog brothers kill the first vampire, they are sprayed with his blood. However, when he visits his mom at her work, he is totally clean.
Corrected entry: When Sam is singing in the bath, and he flips the comb and drops it into the water, you can hear him "woo woo"-ing, but his lips don't match his singing.