Continuity: Kirby visits Henri Cotillard's office in Paris, France. When Henri asks Kirby for the name of the film he's looking for, he puts his right hand by his computer monitor. In the next shot, Henri's arm is by his side.
Errors made by characters (possibly deliberate errors by the filmmakers): When Kirby is confronted by Walter about the money he owes, Walter tells Kirby he's got one week to come up with it. Kirby towards the end of the movie gets the money and finds the theater chained up. When on the phone with one of the employees from the theater he says that he was given *two* weeks to get the money.