Continuity mistake: When Jimmy is getting ready to propose, in the shot where he pets his dog, you can see in the first shot from in front he is not moving, yet in the next shot he is walking and leaning towards the dog.
Revealing mistake: When Jimmy and War are fighting over the gun near the end of the movie, you can see that many shots are reversed, as the fire behind them is not burning upwards like regular fire, but appears to be "sucking" downwards, back into the barrels.
Continuity mistake: When Lola is caressing Lucifer, between cuts her one hand goes from his hip to his shoulder. There is a cut where she repeats one of the rubbing motions twice soon after.
Revealing mistake: When Jimmy hands the priest the crow, in the closeup it is really the bird, moving around and squawking, but in wide shots, it is a very stiff and motionless doll.
Revealing mistake: When Death/Satan is killed at the end, you can see the rocks that he is impaled on move with his own body movements, much like prosthetics attached to him.
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.
Continuity mistake: After falling down the hill, somehow the refrigerator with Jimmy and Lily's bodies in it goes from floating in the pond, to embedded in the ground straight up.
Continuity mistake: When Jimmy puts Lily's necklace around the mirror in the hearse, in the first shot he is still extending his arm to reach towards the mirror, yet when the camera cuts, his arm is fully extended.
Continuity mistake: Lily's brother leans over to pick up his hat in the beginning, and then in the next shot, he is suddenly standing up with the hat in his hand without having time to do so between shots.
Revealing mistake: In the beginning, when the miners and Indians are fighting, you can tell they are all pulling punches and trying not to really hurt each other. Some of them even visibly miss punches and kicks by large distances.
Continuity mistake: As Famine is about to pour the gasoline over the priest, in one shot he lifts the canister above his belt-line, but in the next shot, it is suddenly under his belt-line.
Visible crew/equipment: You can blatantly see lights in the water when Jimmy is brought back to life, which makes no sense at a garbage dump at a closed mine in the nighttime.
Continuity mistake: When the priest's wife is following Jimmy's descent with the gun, in some shots she is lowering the gun to match Jimmy's level, and in other shots, it is pointed in one direction, not moving.
Continuity mistake: A few shots before Luc blows the match out that he is going to burn the priest with, the position of the priests head changes in one shot.
Continuity mistake: When Lily is about to have her eyes cut out, Luc goes from facing them in the background to facing away, to facing away with his feat propped up on the window between a series of shots.
Continuity mistake: When War is going to blow himself up, in one shot he has the fuse to the explosives in his hand in front of his face, and in the next shot it is down by his waist, and his hand is at his side.
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.
Other mistake: After rising from the dead, Jimmy's dress shirt is not cut, torn or bloodied despite Lucas stabbing him THEN ripping out his heart prior.
Factual error: Luc Crash holds the match unreasonably close to the gas-soaked priest, whom he intends to play with and not actually burn alive. At the distance he held the match, the fumes from the gas would have caught fire.
Revealing mistake: When War and Jimmy are fighting, you can see a brief shot of a window exploding. This same shot is shown again (but longer) later on when War explodes.
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.