Other mistake: Handsome and Charming head out of Snakes End (followed by the newlyweds) and begin their long journey. It then cuts to Cactus Jack before he begins the journey, and at the start of this shot as he places Whiskey's bit, we can see the signpost with three wooden arrow signs and the hillside behind him. This is the same location where Cactus Jack lays trap number seven, named "the tunnel in the hillside," on the next day during the journey; noticeable when Handsome and Charming arrive. (00:28:35 - 00:54:45)
Other mistake: Miss Froy writes her surname in window condensation on the train before she is abducted, where it's supposed to have remained visible for hours, which is dubious in high summer. Then it all of sudden disappears as they go through a tunnel, but why would going through a tunnel cause condensation on inside of train window to all of a sudden disappear?
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.
Other mistake: The chandelier falls at the crystal ballroom and Wally drops. You can see he's nowhere near it but he still falls down.
Other mistake: Teri Lynn, the founding member of HOTS, who comes from somewhere like Arkansas or West Virginia's accent disappears from the movie several times.
Other mistake: Lauren Tewes' character is credited as "Jessie", but the name tag on her waitress outfit says "Jesse." (00:17:00)
Other mistake: When showing the animals outside of the cabin, the shot of the deer is obviously stock footage. The video quality doesn't match the rest of the movie. (00:28:40)
Other mistake: In the scene where Frank Morris first starts to dig using the nail clipper, he stands up in his cell, turns off the light then bends down to start digging, however the only light coming into the cell would be on his right, but the shadows from his head and bars appear to be from a light directly behind him.