Visible crew/equipment: In the scene with the two Australians in the hut when the camera switches to a wider shot as soon as the bald headed guy says, "Disgusting rat!" the boom mic dips into view for a second.
Continuity mistake: When Ace is tied to the raft, he is wearing a completely different shirt from the one he was wearing in the previous scene. Furthermore, the one he is wearing on the raft got torn earlier in the film after he was hit with the tranquiliser darts, but has been miraculously repaired.
Continuity mistake: During the Cliffhanger skit at the beginning, the rigging holding the racoon starts to break, at first it shows the stress fracture breaking left to right. When it breaks, it breaks vertically.
Continuity mistake: Toward the end of the movie, the consul guy is running from the tribes for stealing the bat and he has a rip on his right shoulder. But in the next scene when he turns around to see the gorilla, the rip has vanished. In this same scene, when the ape opens it's mouth, you can see a shining piece of unpainted metal.
Continuity mistake: In the mansion in the scene at the chess table for half the scene the chess pieces are there. The end of the scene, the pieces are gone.