Other mistake: Towards the end of the film, after Snipes beats the crap out of a lot of vampires, Whistler throws Blade's sunglasses to him. They show him throw them in one shot, then in the next shot they show Snipes catching them. But look in the background at Whistler, he doesn't have the glasses, but is moving his arm like he is throwing them. The glasses must have been computer animated, and bad editing contributed to this mistake.
Other mistake: When Blade is fighting Nomak in the House of Pain, Nomak pulls a steel bar out of the ground and Blade retaliates by drawing his sword. The way he does this however (Blade grabs hilt and the sword magically detaches from his back) would suggest that either the sword wasn't sheathed or he just cut through both the scabbard and his coat.