Other mistake: When Martin Lawrence falls over the railing in attempt to get the mysterious necklace, the camera goes to another shot that pulls away from the moat. You can see the logo on the back of Lawerence's cover-alls swimming away at the corner of the screen, when he's supposed to be under water. (00:06:15)
Other mistake: Lawrence travelled back to the exact same date hundreds of years ago. However, the calendar has been changed significantly, including the elimination of eleven days in the 1700s to match the Gregorian calendar we now use, such that to go back exactly X years would put you on a different date. (00:22:30)
Other mistake: When Jamal and Victoria are on top of the castle, Victoria shouts, "Don't do it Jamal" then has her throat cut. If you look carefully, you see there is no cut made and the blood only appears when she rolls over on the floor. (01:17:55)
