Jack and the Beanstalk (1952)

Revealing mistake: When the Prince and Princess are catapulted over the wall of the Giant's castle, you can see their shadows on the "sky" above the wall; the sky is a studio wall painted blue.

Character mistake: When Jack offers to sell his cow to the butcher, the butcher says "There isn't much meat on him." Jack points out that the cow is a "her", but after the sale, he says to the cow, "Be a good boy."

Continuity mistake: When Jack is speaking to Princess Eloise near the water well, he turns his head to the right. In the following shot, his head is turned to the left.