Continuity mistake: When Jimmy first applies the black crow makeup, you can quickly see he draws a straight line, then a few shots later, it is a curved line.
Continuity mistake: Almost everyone in the bar disappears, even though it was full moments earlier.
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.