Continuity mistake: In the scene where Tia Carerra is reborn. Her deformed servant is chanting a spell and places a flaming dagger in her mummified mouth. She awakens and bursts into flames, just then she touches his badly deformed right hand and it heals. Over the next few camera shots his hand goes back and forth from normal to deformed.
Other mistake: During the honeymoon scene, Tia (who is obviously wearing a wig) and Kevin are rolling around simulating love making. What ruins the mood for me is when strands of her "hair" come loose and are lying around on the bed. It sure would dampen my mood if someone pulled out chunks of my hair.
Continuity mistake: Kull and his motley crew are on the ship sailing north, as they reiterate several times. He spends the night in a tangle of love making in the captains quarters, emerges on deck in the morning, yawns, stretches, and glances to his left, or 'port-side', to view the rising sun. He must be sailing south to have the sun on port-side at sunrise.
Audio problem: At the end of the film, when Kull raises his axe and says, "By this axe, I rule," his lips don't match when he says "By this."