Continuity: In the scene where Dr. Dawson and Olivia are seeking Basil's help at his house, Basil sits down and starts playing the violin, holding it in his right hand and having the bow in his left. When Basil the stands up in another shot, he is holding the violin in his left hand (like it's supposed to be) and the bow in his left.

Continuity: When Professor Ratigan first climbs in his hot air balloon, it is a bright pink. Later, when Basil is chasing him through the sky in his home-made balloon, Ratigan's hot air balloon is a very dark burgundy.