The Ordeal of Israel Boone - S4-E2
Other mistake: When Daniel starts to fall down the hill when he is sick from the snake bite, there are two pick up trucks parked down on the road, a white one and a blue one. They show up on the right side of the screen.
The See-Paris-and-Die Affair - S1-E22
Other mistake: Solo seems to forget just who called whom when he calls Illya on the communicator. After Illya picks up, Solo answers as though Illya had called him instead. (00:32:40)
Other mistake: It is established that Drs. Quest and Hartman speak the Po-Ho's language, but when they are captured, Dr. Hartman is translating to Dr. Quest how the Po-Hos are going to torture them.
Other mistake: One of the natives putting the captured Seaview personnel into the cave is wearing laced up sneakers. (00:36:25)