Factual error: The security guard in the bank is carrying a revolver as a sidearm but has semi-automatic magazine pouches on his duty belt.
Continuity mistake: When Nick is talking to Kate on the roof about how he is in love with her, what is on the ground behind him changes from shot to shot. First it's a semi truck with FedEx on it, then it's a plain white trailer on its own, then it's a yellow cab and finally when they switch places and Kate is facing away from the edge it's a black car.
