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.
Continuity mistake: When Wilma and Betty are watching "Shinrock" on the TV, the camera cuts to Pebbles and Bamm-Bamm and the rug they are sitting on is covered with building blocks. Later on, when the two are trying to dance the "Pterodactyl", the rug is completely clear.
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.
Continuity mistake: When Fred is performing "Let The Sunshine In" at the end of the episode, you can see that his right foot is next to Bamm-Bamm on the rug, but in a close-up of Pebbles and Bamm-Bamm, his foot has disappeared.
Continuity mistake: When Barney is cutting the hedge with his hedge clippers while speaking to Loudrock, Barney's position changes between shots.
Continuity mistake: When Wilma is speaking to Fred outside her house during the dream sequence, you can see she is holding an ear trumpet in her right hand, but later on in the scene it disappears.
Continuity mistake: The "Sandy" who Fred challenges at the pie-eating contest is a completely different man to the one who sprayed Fred with water earlier in the episode.
A Haunted House Is Not a Home - S5-E7
Continuity mistake: When Pebbles is watching Wilma bake cookies, you can see that she has a baseball next to her, but when Betty and Bamm-Bamm arrive, we see Pebbles and the baseball has now gone.
Monster Fred - S5-E2
Continuity mistake: When Barney is driving Fred to the doctor after his accident at the bowling centre, you can see that Dino is sitting behind him in his car, but in the shot where Fred says "I don't want to see a doctor!", Dino has disappeared.
Monster Fred - S5-E2
Continuity mistake: When Fred is holding his bowling ball in Alley 13 at the bowling centre, you can see there is a bowling ball rack behind him, but in the next shot the rack has disappeared.
Monster Fred - S5-E2
Continuity mistake: After Fred brakes his car to avoid hitting the black "Catosaurus", Barney's hands can be seen on the front of the car, but they're not on the car in the next shot.
Pebbles' Birthday Party - S5-E4
Continuity mistake: During Pebbles' Birthday Party, nine dancing girls come out of her birthday cake, but when they perform as a group, there are only six.
Continuity mistake: At the end of the episode, watch the colour of the time-machine inventor's outfit. You can see it's light blue when he pulls the lever, but when he gets the Flintstones and Rubbles back to the fair and asks them what happened, his outfit is a darker shade of blue. It then changes back to its lighter shade as before.
Continuity mistake: Towards the end of the episode when the time-machine inventor pulls the lever on the machine, three lemons appear and he says "Wow, Jackpot!". But in the next shot, when the Flintstones and Rubbles run out of the machine, the lemons have vanished.
Continuity mistake: When Fred pays the man at the hamburger stall 'two rocks', he places the money on the counter. When we see a close up of the money, one rock is behind the other one, but in the very next shot the two rocks are now lying side by side.
Continuity mistake: When the man at the hamburger stall gives Fred his 'brontosaurus burgers', he serves them on a tray, but just a few shots later the tray is nowhere to seen.
Continuity mistake: When Barney shows Fred the circled ad in the newspaper about auditioning for "The Ed Sullystone Show", we see a close-up of the ad and you can see that the circle around the ad is completely different from the one seen in the previous shot.
Continuity mistake: When Fred goes over to Wilma after she drops the cups and saucers after seeing him shrunk, the broken crockery that surrounds him is completely different to what's seen in the previous shot.
Continuity mistake: In the scene where Fred and Barney are in the doctor's surgery, the doctor produces a lollipop for Fred. When he produces the lollipop, you can see it's well away from Fred, but as the shot changes the lollipop is much closer to him than it was in the previous shot.
Answer: The ratings had declined in its last few seasons, and the series was cancelled.
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