Buck and Wilma are both wearing uniforms with a red sash tied over their jackets at the waist. Just before leaving the crashed shuttle, Buck removes his jacket but the sash is now just tied around his waist over his shirt which is tucked into his pants.
When Buck and Hawk are trying to locate Dr Goodfellow who has fallen into a pit, as they are asking him to keep talking, the edge of the studio set's sky backdrop is visible in the top right corner of the screen.
When removed and carried over to the stand, Duvoe's head is clearly fake.
The skull embedded in the cave wall has a separated cranium, such as found on classroom skeleton models.
Asimov and Zite are said to be meeting in the ship's airlock (a connection between the two vessels) but are actually in the Searcher's hangar bay.
In the opening scene as Duvoe is dressing, there is no logical reason for him to remove his head just so his assistant can put a cape on his body.