Continuity mistake: In the scene where they ride to the top of a hill on horseback, you can see a white van and power lines in the distance.
Continuity mistake: As Shirley Jones is singing "In love with Me" at one point, she's sitting down, and is slouching back. The shot changes to the side, and she's sitting up straight, and is much higher against the counter than she was. Her hands have changed position as well, she's no longer holding onto the cup she had in her left hand. (01:19:55)
Continuity mistake: When Jack is aboard the boat at the end of the film, the dragon drops a rock into the water. The water splashes into the boat soaking everyone. The front of Princess Elane's dress is wet, but in the next couple of shots it is completely dry.
Continuity mistake: When Sam is going to the widow's house, he is carrying a box of chocolates and a bunch of flowers, but when he arrives at the door, the chocolates have disappeared and the flowers are completely different.
Continuity mistake: When Sylvester Junior is turning the wheel to pump oxygen into his father's diving suit, he spots a worm and starts following it, walking away from the pump. But when Sylvester bangs on the tank glass telling him to start pumping, we cut back to Sylvester Junior and he is back near the pump again.
Visible crew/equipment: Just after the Castaways escape the hut by climbing down the cliff with the homemade rope, they are chased by the natives, also descending the rope. After the Castaways have set the rope on fire, a heavy safety harness is seen around one of the native's waist. As the rope burns upwards, an attached cable pulls him up.
Continuity mistake: The egg that Daffy Duck picks up was not on the top when he approached the pile a few seconds earlier.