In chapter 4 "The Pit Of Pendrang", Rod Stanton is left on a pole in a lion pit. There are over 10 cuts to shots of the lions beneath him showing them to all be female lionesses without manes. When Tal Shan throws him a rope to escape, but then he starts to slip from the rope, the cut to the lions now shows 3 male lions with manes.
In Chapter 1 when the airplane crash lands very violently, it's unlikely the people in the plane would have survived because they are not seat belted in their seats.
In chapter 5: Fiery Danger, the burning sulfur pit scene was taken from Son of Frankenstein (1939) and you can see the Frankenstein monster in the pit. These same scenes are shown again in chapter 6: Death's Shining Face.
At the end of Chapter 12, the car going off the cliff changes into two different type of cars. Repeated again in Chapter 13.