Deliberate mistake: The theatre is said to have been closed down "years ago". But all the theater props are still there, and the place shows no sign of disuse, it is not even dusty anywhere. The electricity and water are also still hooked up and functioning.
Deliberate mistake: When trying to capture the giant Fred, the townspeople trip him with an outstretched rope that they hold in their hands and is not fastened to anything. He is the size of a lighthouse, there is no way they could have held a rope in their hands and tripped him with it.