Other mistake: In the tanker truck/pick-up truck chase, after the tanker rams the pick-up and destroys the wooden shelter in the bed, you can see the Terminator turn the steering wheel right but the truck turns left instead. You have to look very closely to see this.
Other mistake: There is a patch on the jacket Harley (Rourke) wears, that appears and disappears throughout the movie. It's on the front lower right side. It is there when he's standing outside their friends' bar with Marlboro, it's gone when they are inside.
Other mistake: When Eve runs into the BMW from behind, the guy slams into his steering wheel. When you are hit from behind, you will slam backwards into your seat. It happens twice, the third time the airbag deploys and stays inflated (real airbags deflate in a second, they are not balloons).
Other mistake: When Sulu tells Kirk he is coming to help, he states the Excelsior is currently in the Alpha Quadrant. The problem is the the Alpha Quadrant in the Star Trek universe is one quarter of the total Milky Way Galaxy. While technically correct, Sulu giving his position as in the Alpha Quadrant is useless to Kirk in terms of knowing when to expect help. It doesn't matter where Khitomer is in the galaxy. Sulu saying he is in the Alpha Quadrant gives Kirk absolutely no idea of when he will arrive. He could be anywhere from 5 minutes away to 5 weeks away or even further. Remember, it was originally projected to take Voyager 70 years to go from the Delta Quadrant back to the Federation in the Alpha Quadrant.
Suggested correction: The implication is that Excelsior has only very recently crossed the border from the Beta Quadrant to the Alpha Quadrant.
Even if that "implication" were true (and there's nothing dialogue-wise to indicate such) it's still useless to Kirk as to when the expect help. The dividing line between the Alpha and Beta is fully half the width of the galaxy.
Sulu doesn't expect Kirk to deduce where the Excelsior is, he tells him directly that they're unlikely to make it in time, and the reason is that they are "now in Alpha Quadrant" i.e. they were previously not in the Alpha Quadrant, i.e. they're far enough away that recently they were in a whole other quadrant of the galaxy. (I agree it's an awkward line, but it makes sense if you think of it like "I'm now in the U.S." if it's known you already live there - it means you've just returned).
Other mistake: When the firefighter is fighting with the arsonist, the gas line is disconnected from the fireplace. Just before the dramatic explosion, the gas line ignites. This is incorrect because the fire would have started from the outlet to the gas (from ignition source to fuel source).
Other mistake: In the fight scene where Bohdi helps special agent Utah you see that his surf board gets broken in two and then after the fight he is seen leaving without the board, but in the scene where he and Tyler are woken up early to go surf right before Tyler says "you look like you just saw a ghost" you see him carrying the same board.
Other mistake: There is a scene where Joe is shown taking a bullet for then-President Carter. We then see Darian visiting Joe in the hospital after the shooting, holding a picture that she drew for him. Darian looks to be about 6 or 7 years old, yet this film takes place in 1991, Carter left office in 1981, and she is supposed to be 13 in the movie. If she was 6 or 7 when Carter was in office, she would be 16/17 by 1991. (01:02:55)
Other mistake: After Clarice is finished interviewing Frederica Bimmel's friend, they cut to the abandoned house in Calumet City IL. The front yard is full of leaves, but yet there is only 1 lone (pine) tree in the yard, and the homes on either side do not have visible trees either.
Other mistake: In the ending credits, Gary Carter is listed twice.
Other mistake: During the scene in which Chad and Alex are at the harbour to blow up the drugs shipment we see Alex being shot at my numerous bad guys. He has one pistol in his hand, and pulls another from his waist band. Each pistol carries around a maximum of 15 shots per clip, however he manages to fire 43 shots without reloading.
Other mistake: When Laura's husband hits her across the forehead, the cut on the left side of her forehead is visible and bleeding when she is on the floor. However, that night when they go sailing, she has her hair pulled in a braid without any bangs covering her forehead and the cut/bruise is totally gone.
Other mistake: Why hasn't there been a mention of Freddy having a child in previous films? Couldn't be because they covered it up, as soon as Freddy was discovered to be the Springwood slasher the media would have been all over him and his family.
Suggested correction: Throughout the entire series, it's shown that there's sort a miniature conspiracy going on where the people of Springwood have been trying to make everyone forget about Kruger, including actively suppressing evidence. It's possible that when he was initially caught, the media was aware of his daughter, but not only would it not have been that big a deal (they were focused on him- not his family) in the decades that have passed since his original "death", the information was likely covered up or ignored in favor of trying to make everyone forget about it. (Hence, even Maggie doesn't know Freddy is her father.) Furthermore, the fact he has a daughter has basically no impact whatsoever on the story thus far, so it makes sense it hasn't been brought up before.
It has never been shown in any nightmare film that there is a cover up conspiracy until Freddy vs Jason (which takes place 5 years after this film), and that cover up begins after the events in this film, evidenced by many characters saying it's been quiet for 5 years.
Other mistake: Chucky cuts Andy's Achilles tendon from under his bed. Throughout the rest of the movie, Andy should have a limp from such a severe injury. However, he has no trouble walking or running in subsequent scenes, nor does he show any signs of injury.
Other mistake: When Blake makes the tape of Styles and the prostitute, and uses it to discredit him, I doubt that Blake and his buddy had access to top notch equipment. Surely, experienced Los Angeles detectives would have a great technician on board who would be able to testify that the tape was fixed or modified, such as Styles's mouth movement.
Other mistake: Just after Tarzan has been crushed and killed by the ceiling being lowered to the ground, Ricky finds a photo of Tarzan and his mother that slipped out of the jail cell, just in front of the entrance beforehand. There is no way this picture could have slipped out of the cell. He was standing nowhere near the entrance to the cell whilst he was being crushed and anytime he was shown standing near the entrance whilst he was fighting with Ricky, so nothing could have happened for the photo to unintentionally slip out of his pocket and out of the cell. (01:05:05)
Other mistake: There are several moments while using the clown dummy toy that make it very obvious it is an actor in a suit. Most obvious of which is that it somehow 'senses' things like the momentum and orientation of the person controlling it, when all it is shown to do is copy muscle movements/motor skills. There are far too many examples to list.
Other mistake: The bus Frank is in crashes through a wall of items, at speed, but no visible damage is done to the front of the bus when we see it later. (00:55:05 - 00:55:40)
Other mistake: Despite Lena's cab driver and his wife both being Armenian, the wife's speaking Spanish.