Continuity mistake: When Daphne opens the door of the car and the pile of crawfish shells falls out, it's more than what Shaggy and Scooby had eaten earlier.
Continuity mistake: When Lena suggests that Fred is too scared to go to the island, the table with the bananas on it that was there a few seconds earlier has vanished.
Continuity mistake: When Daphne cries "Bo, get us down" her lantern is in her left hand. In the next shot, her lantern is in her right hand.
Continuity mistake: When Daphne yanks a zombie out from the bushes, the zombie goes from leaning over the opened door of the car to leaning on the closed door.
Continuity mistake: When Velma puts the pile of books on the table and sighs, the angle of the TV has changed from the opening shot of the bookstore.
Continuity mistake: When Bo says "I was planting some flowers" he points to several pots on the ground that weren't there earlier.
Continuity mistake: When the gang hears Lena scream, they run off without their lanterns. When they get back to the house, they have their lanterns again.
Continuity mistake: When Scooby grabs the bottle of hot sauce, the top is still on, but in the next shot he starts squirting sauce onto his sandwich, so of course the top is off.
Continuity mistake: During Semone's story, between shots of the settlers dancing, the people clapping their hands in the background come closer to them.
Continuity mistake: When the voodoo dolls fall on the ground, their positions change between shots.
Continuity mistake: When Shaggy is talking on the phone with Fred and says "Busy? Nah." the scale on the table is further away from the phone than it was in previous shots.
Continuity mistake: 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.
Continuity mistake: The lobster-like monster crashes into a pile of cans that have white labels on them. Then when Shaggy takes its mask off, the white labels are gone.
Continuity mistake: Ropes are tied around the voodoo dolls' legs and arms, but when Velma is untangling them, she only takes the ropes off the arms.
Continuity mistake: As Velma says "So that's where the cleaning cloth for my glasses went" the position of the dolls on the table changes between shots.
Continuity mistake: When Mystery Inc. is having dinner with Lena and Simone, the position of the plates and other items on the table changes between shots.
Continuity mistake: 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 mistake: 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 mistake: When Simone and Lena are controlling the gang with voodoo dolls, Bo comes crashing next to Fred. A few seconds later, Dalphne is between Fred and Bo.
Continuity mistake: After locking the door behind him 4 times, Shaggy goes to open the other one. In the wider shot, the door is decently lit, just a spot of shadow by the handle - in the close-up, the whole area is pitch black. (00:01:40)
