Other mistake: After Michael kills Laurie at the beginning, he hands the knife to the inmate with the clown mask. The next kill is the cameraman for which he uses the tripod ends. A few scenes later they show Michael standing holding a knife with fresh blood on it. He hasn't killed anybody with this knife yet so where did the blood come from?
Other mistake: Towards the end of the film, after Snipes beats up 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. (01:37:34)
Other mistake: When we see the numbers for the coded entry to Alice's weapon, the order of the numbers is 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 0 - 9. The 9 and 0 are the wrong way round. (00:47:40)
Other mistake: Every person in the movie has exactly the same make and model of computer with exactly the same desktop configuration on it. The number, type and order of icons is the same, as is the plain blue background. (00:30:50 - 00:31:40)
Other mistake: John explains to his friend Ed that, within the last two weeks since the accident, Mary has undergone brain surgery to remove the tumor in her right temporal lobe and that she is undergoing chemotherapy. This surgery alone would necessitate shaving at least half of Mary's head, and the chemotherapy would prevent her hair from growing out again for months. But, in the immediate next scene, we see John at Mary's side as she recovers in the hospital, and her red hair with natural hairline is as full and lush as in the beginning of the film.
Other mistake: In the scene where Stallone's partner is driving him to the detox center, you first see the truck with tyre chains on only the rear wheels. Half a minute down the road they are on all four tyres.
Other mistake: When May is sewing the red blouse for her coffee shop meeting with Adam, the presser foot of her sewing machine is not down. (00:10:20)
Other mistake: The werewolves have cut the power to the house, but in half the scenes there is an electrical light source. How is this possible?
Other mistake: This occurs during the scene where the group has just rescued the colonel. Before Mrs. Paley makes her appearance, the others notice the panel opening, and make movements, but they don't make sense. We'll call the side where the colonel was the north. Sasha is in the southwest corner, and Max is near her. Simon and Jerry are both at the north wall. When the sound of the door opening is heard, Max looks to the west. Simon is kind of in a strange position, but looks correctly to the north, where Mrs. Paley comes from. Simon and Jerry both knew where to look before the door opened, so it's reasonable to assume that it's easy to tell which door is opening, so Max shouldn't have looked at any other door.
Other mistake: The Blazer was only hit twice by the baseball bat, once on the right front fender, and once on the grille, but it sustained a massive amount of damage. Also, when the infected guy was inside, throwing up blood, you could see that the windshield was cracked in several spots, but it was never hit.
Other mistake: Jeffrey gets pulled over by a cop. He shows his license to the cop and the date of birth is the late 1990s, but he was a young boy in the 70s.
Other mistake: The skull they used for the little girl in the well is obviously an adult's skull.
Other mistake: When Emery awakens from his nightmare his clock reads 1:20 a.m. But in the following shot, a grandfather clock in the hallway strikes 2am, but its hands are at 12:00 am.
Other mistake: When Jim, Selena, Frank and his daughter enter the supermarket, you can notice all the fresh produce (apples, carrots etc) looking fresh. This virus has been going on for a few days now, and supermarkets get their fresh produce out immediately. After 10 days or so, give or take, the fresh produce shouldn't be looking this fresh. (00:46:00)