Right after the vampire tries to attack Daphne and Velma in their bedroom, Shaggy and Scooby run towards the door intending to barge into the room. Velma was the whole time wearing a pair of white fluff slippers, but oddly she appears barefoot for a single moment when she opens the door to allow Shaggy and Scooby into the room.
When Shaggy discovers a room filled with coffins, Scooby-Dum's collar is blue in one scene before being red again in the next scene.
Daphne's nightgown has no sleeves, showing her bare arms, but when Fred examines the room curtain, the nightgown has long sleeves.
The title was misprinted as "Vampires, Bats and Scaredy Cats" on the back cover of the Headless Horseman of Halloween VHS.
When the gang was about to set their trap, the vampire called for Lisa through the vent which kick-started the gang's plan in a hurry. However, for some reason the audio had cut out again and only Scooby reacting to the sound was seen and then suddenly Fred declared that the vampire is coming.
After Shaggy says, "Zoinks! It's old pointy teeth!" and Scooby-Dum jumps into the vampire's arms, Shaggy's mouth moves again, but there is no sound.
After Shaggy yells for help, the scene cuts to the rest of the gang, who act as if he is still yelling, but the audio has cut out and the gang is reacting to nothing.
Fred calls Scooby-Doo and Scooby-Dum brothers, saying to Shaggy, "You and the Scooby brothers stay and guard Lisa."