Other mistake: When Jody finds the dwarf in the car and recognizes it to be his deceased friend Tommy, he has a quick flashback to Tommy in the coffin and the exact moment Tommy was murdered. But the second flashback makes no sense, Jody never saw Tommy being killed and was told by Reggie that he committed suicide.
Other mistake: Whilst Captain Holland, Lieutenant Pizer, Dr. McCrae, Bob and Vincent are riding in the ship's transport system, the tube comes to an abrupt end due to meteorite damage. Since the tube is outside the ship, there would be no air left for the humans to breathe, nor could they survive in outer space completely unprotected for long. Plus, they would't be able to hear Bob's statement that they should try the main corridor. (01:17:40)
Other mistake: In the opening credits the following is posted "Screenplay based on Rider Haggard's Allan Quartermain" The author's name is usually given as H. Rider Haggard (H. For Henry), and Haggard's hero was named Quatermain (1 "r" not 2). This misspelling of Quatermain appears in many movies.