Other mistake: When Arnold and Vanessa are in the dead guy's office running the CD, Arnold pulls up the shipping date for the arms deal. The screen shows the date to be "TODAY" and Arnold says "Midnight Tonight." Midnight would be 12:00AM, so the screen ought to read 12:00AM tomorrow morning, not today. (01:22:00)
Other mistake: When Arnold lands on the car in the junk yard, you can see the side windows of the car exploding outward moments before impact. (00:57:10)
Other mistake: In beginning of the zoo scene, Cullen shoots J. Scar in the leg and he collapses in pain. For the rest of the scene, he pursues Cullen and fights as if nothing was wrong with his leg.