Other mistake: In the opening scenes, when the gang is introduced, one of the members kicks three men and knocks them out, but you can see he misses all of them by at least 6 inches.
Revealing mistake: When Jimmy attempts to kill himself, the bullet hole on his back is far above where he shot himself in the chest. At least 4-6 inches higher, AND the gun was slanted downward.
Continuity mistake: The barrel in the back of Pestilence's truck is leaking badly through a hole when it first pulls up. Then a few moments later, the hole and leak are gone and the truck bed is perfectly dry. Then he kicks the barrel and the same hole reappears.
Continuity mistake: When Jimmy wakes up at the beginning of the movie, he is covered with feathers and "fluff" from a pillow. However, the amount of material on him changes between shots and even disappears in some shots.
Continuity mistake: The scorpion on Jimmy's chest moves around in some close-ups, but in wide-shots it is always perfectly still in the same spot.
Continuity mistake: When the car explodes in the beginning, in the first shot it is actually exploding, but in the next shot, you can tell it is simply on fire, and not exploding as in the previous shot.
Other mistake: Luc Crash is wearing his normal outfit under his prison clothes.
Answer: As I understand it, it all had to do with a spat between the director of the original Crow movie (Alex Proyas, who had "approval" of all the subsequent Crow movies) the producer of the Crow movie franchise, Jeff Most, and Miramax. Miramax eventually caved in favor of the producer and it was made into a "non-Crow entity" when Miramax reportedly signed Eminem to play the bad guy.