Audio problem: Right after the Thermians become sad over the mention of Gilligan's Island, Alexander rolls his eyes and starts to turn away, while you can hear him saying "Oh brother." However his lips are not moving for this indicating the line was dubbed in.
Continuity mistake: When they're flying down to the planet, Guy is upset because he doesn't have a last name. He asks Jason, "What's my last name?" and Jason doesn't know. In the very next scene, Jason addresses Guy by his last name, Fleegman. (00:55:00)