Continuity mistake: When the men first enter the spaceship, one of the windows shows an afternoon sky and the one next to it shows a nighttime sky. (01:11:20)
Continuity mistake: When Wilby goes into his bedroom, he takes out his PJ's from the bureau drawer, leaving the drawer open. He goes into the bathroom to put on the PJ's. When he comes out of the bathroom, the drawer in the bureau is closed.
Continuity mistake: In the scene where the two kings are fighting, one of them pulls a swordfish from the table and after they calm down sticks the fish in his belt. In the next shot the fish has disappeared.