Dr. Sinister - S5-E8
Continuity mistake: When the three gangsters bust into Madame Yes's house, one of the gangsters holds on to Barney's leg and you can see there are two purple planks behind Barney. When we see Barney a couple of shots later, the planks have disappeared.
Dr. Sinister - S5-E8
Continuity mistake: When Fred and Barney are in Madame Yes's house, Madame Yes takes away the envelope from Fred and you can see Barney is standing beside him, but in the next shot Barney is standing behind Fred.
Dr. Sinister - S5-E8
Continuity mistake: When Fred asks Barney what he should do with the envelope the agent handed him, Barney says that they should forget about it. You can see that Fred is holding the envelope in front of him, but in the next shot Fred is holding onto the steering wheel and the envelope is nowhere to be seen.
Dr. Sinister - S5-E8
Continuity mistake: When Fred is reading the address on the envelope that the agent gave to him, you can see that he is holding it with one hand but a close up shot of the envelope shows him holding it with both hands.
Dr. Sinister - S5-E8
Continuity mistake: When Betty is carrying some dishes from the kitchen through to the room next door, the dishes have three cups on the top of them, but when Betty is setting up the table, the cups are nowhere to be seen.
Dr. Sinister - S5-E8
Continuity mistake: When Barney is taken inside Madame Yes's house, there is a sign reading "1717 Stoney Lane" on the door. But when Fred barges the door open to rescue Barney, the sign has disappeared.
Dr. Sinister - S5-E8
Continuity mistake: When Jay Bondrock lights the fuse on the bomb to destroy the island, you can see he is holding the match by the fuse, but in the next shot he is holding the match under the fuse.
The Most Beautiful Baby in Bedrock - S5-E10
Continuity mistake: When the Flintstones and the Rubbles are sitting at their table in the pizza parlour, Fred asks Betty if she wants some pizza and you can see there is a large pizza in front of Wilma and Betty, but in the very next shot the pizza has gone.
The Most Beautiful Baby in Bedrock - S5-E10
Continuity mistake: When Wilma is sitting in the car, she asks Fred what's wrong and you can see that he is standing by the car, but in the next shot when Fred says he forgot his car key, there is no sign of the car.
The Most Beautiful Baby in Bedrock - S5-E10
Continuity mistake: When the Flintstones and Rubbles arrive at the Bedrock Theatre to see "Rockeo & Julietta", Fred parks the car in the car park and you can see there is a car next to him when he stops, but in the next shot the car has vanished.
Other mistake: Fred's telephone cord is missing when he and Loudrock are calling their friends about the puppies.
Continuity mistake: When Barney is cutting the hedge with his hedge clippers while speaking to Loudrock, Barney's position changes between shots.
Continuity mistake: The "8" on the side of Fred's car keeps changing style throughout the race sequence.
Continuity mistake: When Fred drives his car the wrong way during the race, there is an "8" on the back of the car when he squeezes his way through two cars, but in the next shot the "8" has disappeared.
Continuity mistake: When we see a close-up of Fred's car during the race, you can see there are two cars in front of him and there is nothing behind him, yet in the next shot he is being passed by a purple car.
Continuity mistake: When we first see Fred's car at the Indianrockolis 500, the car has nothing on the side of it, but when we see the car at the start of the race, a number "8" has suddenly appeared.
Continuity mistake: When Wilma is shocked to see Fred on the television, you can see behind her there is a window and curtains, but when we see Wilma in the next shot, the window has disappeared.
Continuity mistake: When we see Fred and Barney singing "Doo Dah" in the car while on their way to the track, Barney is sitting in a single seat, yet a close-up shot shows him sitting on a longer seat.
Continuity mistake: When we see Fred and Barney in the car on their way to the track, Fred's front seat is missing.
Continuity mistake: When Fred goes past Wilma into the living room to watch TV, he has a fish sandwich and is carrying a tray with a drink and a bowl of snacks on it. When he is watching TV, the bowl of snacks is nowhere to be seen.
Answer: The ratings had declined in its last few seasons, and the series was cancelled.
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