Continuity mistake: In the beginning of the movie, when the little girl is falling, they film her falling all the way down backwards. When they flash to the young Simon's face and the priest and back to the girl she lands face down.
Visible crew/equipment: At the beginning of the car chase, when the bad guys exit the parking garage, you can see an entire film crew reflected in the door of their car. (00:55:20)
Continuity mistake: When Val goes into the Russian building to take the micro-chip he changes to a drunken Russian man and then to a tourist in the space of a few minutes, but when they show him as a tourist he had stubble on his face and that would not be possible to produce in such a short time.
Factual error: Simon recovers awfully quick from the effects of hypothermia. In the hidden room, he is shaking like a leaf and can barely speak. Even when the old woman shouts where they are, he still looks a bit out of it. However, once they escape into the underground tunnels, he appears to be in perfect health and shows no signs of discomfort for the rest of the film.