Don't Forget the Diver - S4-E2
Factual error: While Capt. Square is looking through his binoculars at what he thinks is Mainwaring's platoon marching with their rifles, a 1960's Bedford lorry drives past on the road behind them.
Factual error: 19 1/2 minutes in. They pull over a car and run the plate. Malloy tells the driver the car is registered to a Volkswagen. He should have said the plate is registered.
Factual error: Howard and Emmett travel to New York City to take part in a televised panel discussion on the merits of city life versus small-town life. The station is "KZOK Channel 12." All television stations east of the Mississippi River begin with the letter W, not K.
Episode #1.3 - S1-E3
Factual error: In the Scarlet Pimpernel sketch, the opening caption reads "France, 1778." This is the Scarlet Pimpernel who rescues people during the "Reign of Terror", as is confirmed several times during the sketch. But the French Revolution was still eleven years away and its Reign of Terror wouldn't start until 1793.
Factual error: Early in the episode, while Jason is at the log flume, power lines and transformers are visible to the left. (00:01:15)