Continuity: When the boss enters the storage room, the sign next to the door has black outlines around it. These outlines disappear a few seconds later.

Continuity: At the beginning when Shaggy is running from the Moat Monster, the amount of cobwebs on the shield next to the door changes between shots.

Continuity: When Shaggy and Scooby are stuck in the pit with Morgan Moonscar's zombie, Shaggy can barely reach the top of the pit after standing on Scooby's shoulders. However, when Scooby is lying down cowering at the bottom as Moonscar approaches, Shaggy reaches down, grabs Scooby, and pulls him out.

Continuity: At the start of the opening scene, the moat monster is revealed to be Mr. Beeman, and when he shouts, "I would have gotten away with it if it wasn't for that big dog and you meddling kids," in this overhead shot, Scooby's paws are bare. In the next shot, the moat monster's mask is suddenly over one of his paws.

Continuity: As the gang approaches the door inside the secret passageway, their is a handle on it. When they come closer, the handle is gone.

Continuity: When Dalphne says "It's too much like the good old days" between shots her hands go from being on her cheeks to on her hair.

Audio problem: Semone is explaining how Lena lured outsiders back to the island and she replies "I've had years of practice" but her lips don't match what she's saying.

Continuity: Shaggy is changing for dinner, and puts his suitcase on the bed. He then sees a ghost and runs out of the room. When he comes back, the suitcase is gone.