Continuity mistake: When the stranger waves at Prescott, telling him to slow down, we cut to Prescott in his car and you can see that the car has a windscreen, but when the car stops near the stranger in the next shot, the windscreen is missing.
Continuity mistake: When the laser vehicle leaves the pod and enters the plutonium store, you can see the cockpit has a windshield, but when Scott tells Virgil "We're gonna have to work fast", we cut to Virgil, and the windshield has disappeared.
Continuity mistake: While Prescott, Dempsey and Kenyon are in the castle, there is a glass, a bottle and another glass (in that order diagonally) in front of Prescott. In a close up shot of him, the green bottle has move several inches to the left.