गूफ़

As Simon prepares himself to prove he can fly from the building, his arms are outreached out in some shots and down by his side in other shots.

The bald eagle is not native to Italy.

(at around 1 min) Basil and Deborra enter the set from behind the cut, painted, and layered scenery, completely spoiling the intended trompe l'oeil effect of rooftop domes.