Revealing mistake: Near the beginning of the film, when Clang is outside the Beatles' flat on his delivery bike, you can plainly see the rope tied to the front of it giving him a pull as he starts to ride off. In the next shot the rope is gone.
Revealing mistake: As the cable car dangles and the 'heroes' are struggling to find a solution, Mario Adorf operates a control panel that wobbles like cardboard from the slightest touches. (00:29:50)