In the scene where Christian Slater has been beaten up and goes back to his hotel to clean up, the wounds have switched sides of his face. Forehead cut moves from right to left and nosebleed from left to right.
In the scene where Nicole enters the hotel room after Samantha kills the goon, the door light flashes red, which only happens when the key is invalid, yet in the next shot she is seen opening the door.
In the last scene at the airplane, Samantha has her left side of the forehead hit, but when she later jumps from the plane the injury has moved to her right.