Continuity mistake: When Shaggy takes off his bowler hat to catch the flying garbage, the spots on Scooby-Doo's back are missing.
Continuity mistake: When Fred and Daphne arrive at a temple screen, the top lavender strip on Daphne's skirt is missing.
Continuity mistake: When we see Fred holding the picture of Champion in the Mystery Machine, he is holding one sheet of paper. When we see a full view of the gang in the next shot, Fred is now holding two sheets.
Continuity mistake: When Scooby is in Buck Masters' office, he sees a pointer dog on top of a stand and then does an impression of it by pointing his finger and freezes. When the camera closes in on Scooby in the next shot, the stand has disappeared.
Continuity mistake: When Scooby Doo rushes back on to the beach and Shaggy asks him, "What's with you?", Scooby's eyebrows disappear briefly.
Continuity mistake: In the shot of Scooby Doo turning on the radio at the beach, his spots are missing.
Continuity mistake: When the Mystery Machine is driving down Beach Boulevard, you can see Fred and Daphne are sitting in the front seat. When Velma locates Scooby-Doo on the radar using the transmitter in his collar, we cut to the Mystery Machine and Fred and Daphne have now gone.
What the Hex is Going On? - S1-E6
Continuity mistake: Shaggy is seen holding a multiple folded piece of paper in a left side shot of The Mystery Machine, but the paper has disappeared in the next shot of the gang through the windshield.
Continuity mistake: The camera pans over the filming set and stops on the gang with Mr. Maxwell. There is a van behind them with the Ape Man movie poster on the side. The vinyl piece on the side of the van goes behind the poster and is lined up directly with the orange letters saying "EPI-CENTER FILM COMPANY." It then cuts to a close up of the poster and suddenly it has moved up on the vinyl and become smaller, lined up with the underside of "LOCATION No.2" (00:01:20)
Revealing mistake: After Mr. Maxwell says that the local people refuse to work on the movie, Velma asks why. In her close up, her right pupil is horribly misshapen. Not round, but a wobbly, almost cloud like shape. (00:01:35)
Continuity mistake: The Ape Man breaks the rope bridge that Scooby is on and it begins to fall. But by the Ape Man, the stakes holding the broken ropes are still in the ground at his feet. Scooby falls down and lands on a root, which bounces him back up where he punches the Ape Man. The stakes and broken rope have vanished. (00:03:50)
Revealing mistake: Scooby knocks on a trunk and it knocks back. Fred is shown and tells Scooby to open it. But in that shot, Fred's face is so badly drawn, you almost can't even tell it's him if not for the clothes and the voice. (00:05:20)
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 Shaggy makes the joke about living without a smart Ape Man, he's lying on his stomach with his legs in the air behind him. His feet are apart as he relaxes. Then suddenly in the same shot, they just jump close together and then slowly spread back apart. (00:06:50)
Continuity mistake: Scooby finds a half eaten hamburger in a plate on the floor. When the camera cuts further back to show Shaggy, the plate has moved on the floor, as noted by the lines between boards and the placement of the plate and the spider web on the wall. (00:07:20)
Continuity mistake: The Ape Man puts on a mask of Scooby and pretends to be a reflection. As he is mimicking Scooby's movements, he places his hand to Scooby's and his nails are sticking up. It cuts to a different angle and his hand is in a slightly different position, and his nails vanish. (00:10:05)
Audio problem: Shaggy and Scooby are walking around trying to find the Ape Man to lure him into the trap. There is a sound and Shaggy says "What's that noise?" It cuts to Scooby who is following him who says "RI ron't row." But his mouth does not move at all when he says this. (00:14:15)
Continuity mistake: Shaggy and Scooby stop to play a game of pool. When Scooby looks up and notices the ape head trophy has vanished, he has 4 of the balls by him, including the 6 ball. It cuts over to Shaggy, and he has the exact same set of balls next to him. (00:14:50)
Continuity mistake: Scooby finds a clump of ape hair stuck in the wine cask. It cuts to the gang, then back to the cask as they walk up and suddenly the clump of hair is twice as thick. (00:16:45)
Continuity mistake: The gang emerge from the secret tunnel and find the movie crew dressing rooms. It shows one, then cuts back to the gang. Then it cuts back and suddenly another dressing room trailer appears next to the one seen moments before. (00:17:20)
Chosen answer: A ghost wouldn't have to keep any food in the fridge - they don't need to eat. So it is one thing that proves the ghost is not a ghost.