Continuity mistake: When we see the dial on the Time Machine, it initially has six segments, but when we see a close up of the Time Machine inventor putting his hand on the dial, it has now has seven segments.
Continuity mistake: When Fred and Barney rush off to have a go on the shooting gallery, Wilma's eyebrows disappear but then re-appear when Betty says "Aren't they cute?".
Continuity mistake: When we see Wilma speaking in Fred's car at the start of the episode, the hole behind her changes from small to large between shots.
Superstone - S5-E24
Continuity mistake: When Fred is sitting at the dinner table with Wilma and the Rubbles, you can see he has a knife in front of his hand, but in the next shot the knife has disappeared.
Superstone - S5-E24
Continuity mistake: When the producers tell George to put his Superstone costume on, you can see one of his bags is next to his dressing room table, but in the next close-up of George, the bag has disappeared.
Continuity mistake: When Fred is at Barney's house, he knocks on the door and says, "Open up, Barney, it's me!" When the door opens, Fred's arm disappears.
Superstone - S5-E24
Continuity mistake: When Fred and Barney are in the bar, the barman asks them "What'll it be, you guys?" and you can see there is nothing on the counter, but in the very next shot a bottle has suddenly appeared.
Superstone - S5-E24
Continuity mistake: When Fred and Barney and the gang are watching "Superstone" on the TV, the TV has an aerial on top of it, but when we see a full view of the TV, the aerial has disappeared.
Superstone - S5-E24
Continuity mistake: During the bank robbery in "Superstone" on TV at the beginning of the episode, the amount of money in the robbers' bag goes from empty to full between shots.
Superstone - S5-E24
Continuity mistake: When Fred (as Superstone) is putting the powder on his face in his dressing room, he puts the powder puff back in its dish, but when the door knocks, we cut back to Fred, and the powder puff has disappeared.
Continuity mistake: When the poker players hide under the table, you can see there are blue chips, white chips and red chips on the table, but when Sheriff Craig leaves, the blue and white chips have changed places and the red chips have disappeared.
Continuity mistake: When the man gives Sheriff Craig back his badge, his moustache disappears when Craig is talking to him, but comes back when Craig runs away to pick up his bags.
Continuity mistake: When Sheriff Craig is hiding under the table, he says "But I'm not that sheriff" and you can see part of his feet outside the table. In the next shot, Craig is now completely under the table.
Continuity mistake: When Sheriff Craig is playing poker at the table in the saloon, he is holding his five playing cards with both hands, but the next shot shows him holding the cards with only one hand.
Continuity mistake: When Fred and Barney arrive at the bowling alley, they are seen standing in the doorway, but the very next shot shows Fred inside the bowling alley and Barney is nowhere in sight.
Superstone - S5-E24
Continuity mistake: When Pebbles and Bamm-Bamm are watching "Superstone" on TV, the building pieces in front of them change position between shots.
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.
Continuity mistake: Outside the windows of the house of Julia's friend it is daytime, but outside her front door it is night.
Continuity mistake: When we first see Eddie the radio announcer, his hair is blonde. But later on in the episode, his hair changes to a reddish colour.
Continuity mistake: When Fred and Barney are driving home in Fred's car, the hole in the back of the car changes shape between shots.
Answer: The ratings had declined in its last few seasons, and the series was cancelled.
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