Corrected entry: At the beginning, Dumbledore is taking out all of the street lights, from one shot, the car in right is in the second house, but in the next shot, the same car is in the first house. (00:00:55)
Corrected entry: When Harry buys all the sweets from the cart on the train he places them on the chair beside him. But there are clearly more sweets on the chair then there were on the trolley.
Correction: He simply gave the woman a handful of money. If he had more money than there was candy, the lady could simply get (or magic) more.
Corrected entry: When Hagrid picks up the Philosopher's Stone from Gringotts, he tells Harry "best not mention this to anyone". But as soon as Harry becomes suspicious about Snape, he begins discussing the fact that Hagrid emptied the vault in full earshot of all and sundry, at the dinner table.
Corrected entry: Dudley is supposed to fall into the water in the Reptile House, which is obviously the one at London Zoo, yet he arrives back at his home in Surrey still shivering and wet. He would surely have dried out a bit on the journey home?
Correction: It's possible to get from London Zoo to within the borders of Surrey in a very short space of time - we never find out exactly where the Dursleys live.
Corrected entry: If Harry, Ron and Hermione can walk undetected under the invisibility cloak, why can't Harry walk with the lamp underneath it when he is going to the restricted section of the library? Surely he wouldn't have to hide the light if he did so, reducing the risk of being spotted?
Correction: Two thoughts - one is that he might worry about it catching fire, the other is that it might work on a "one way" system. Light can go into the cloak, so he can see through it, but light can't escape out, so no-one can see him, and similarly the light from the lamp can't escape. If anyone has an official description of how the cloak works, I'll gladly hear it!
Corrected entry: This must always be a risk when working with child actors and filming out of sequence, but Daniel Radcliffe's voice obviously started to break during filming. It was most noticeable during the scene in the forest when his voice went from high to low to high again (and again, and again...)
Correction: Only natural - voices don't break evenly. I think they filmed it mostly in sequence to avoid any major shifts.
Corrected entry: After the Quidditch Match Hagrid says something like 'That's strictly between Dumbledore and Nicolas Flamel.' When he finishes Harry says 'Nicolas Flamel?' Watch Ron. He is mouthing Harry's lines.
Corrected entry: During the final chess game when the Queen is moving into position to smash Rons knight, they cut back and forth from the Queen to Ron. During one cut, the queen figure has its fingers laced and sticking out; in the next shot, one hand is a fist being covered by the other hand. Then it cuts back to outstretched laced fingers again.
Correction: The other hand configuration belongs to the King.
Corrected entry: When Quirrell reports that there is a troll in the dungeon then faints he is laying one direction, but a few seconds later from a different shot he is laying the opposite direction.
Correction: When Quirrell falls, he falls face down with his head towards Professor Dumbledore, and his feet towards the door. When the children run out, we again see Quirell, and he is facing the same way.
Corrected entry: Harry had to pass the key and chess challenges, which caused damage to the door (all the keys flying into it) and the chess set (all smashed up), but when he arrived Prof. Quirrell was already at the mirror. How did he get past them without causing all that chaos?
Corrected entry: In the scene where the first years are looking at the boats, Hagrid says: "No more than four to a boat." BUT when we see Hermione in her boat, there are FIVE people in there. Four are in the normal seats, and one is leaning out at the front of the boat!
Correction: Hagrid never said only four could be in a boat in the movie. That was in the book.
Corrected entry: It the begining of Harry Potter, there is a sequence when Harry's mother is being killed. When we see Harry, he is wearing a Blue's Clues romper suit - I do not recall Blue's Clues being around 12 or so years ago.
Correction: The pajamas baby Harry is wearing are not Blue's Clues. It's a blue bunny on the sleeves.
Corrected entry: In the sorting ceremony, we see Susan Bones, the girl with long curly hair, was sorted into Hufflepuff House. Later, in Professor Snape's Potion class, we see Susan was sitting behind Harry when Snape questions him. Only Gryffindor and Slytherin are attending in that class together - Susan was in the wrong class!
Correction: It is never said in the movie that only Gryffindor and Slytherin have potions together. There are Ravenclaws in the class too.
Corrected entry: The promotional photos show Harry Potter with a scar on his forehead over his right eye. On the covers of all the books, the scar is clearly shown to be over his left eye. This is to correct the mistake about the scar being in the wrong location on Harry's head.
Correction: JK Rowling has commented on this and said that in the text of the books, the scar's location is never indicated (only that it's on his forehead somewhere) and it was the novel's artist who decided that it should be centered (see the 4th book cover for the best view). The movie people decided to make it off-centre, and Rowling was fine with that.
Corrected entry: When Harry, Ron, and Hermione are telling Hagrid that Snape is trying to steal the stone, he tells them that Snape helped protect the stone, and 'he's not about to steal it'. So far so good, sticks to the book. However when they actually try to save the stone, Snape's challenge, the logic one with potions, is missing!
Correction: There is no evidence in the film that suggests that each of the teachers did a separate challenge.
Corrected entry: When Ron is playing chess on top of the knight, why does he not just get off it when the other side's piece comes to destroy it? I could not understand why he clung on. It took an age for the other piece to arrive to destroy his knight, he had all the time in the world!
Correction: Jumping off would be the same as resigning.
Corrected entry: When Harry comes back to his room after having seen his parents in the mirror, he is still wearing the invisability cloak. However when Harry pulls back Ron's duvet to wake him you cannot see his hand yet he would have had to take his arm out of the cloak to do the action.
Correction: No, he would not have had to removed his hand from underneath the cloak as even through the cloak he can move objects.
Corrected entry: At the battle with the professor, the professor was perfectly fine when he tried to strangle Harry. It's only when he was touched by Harry's hands did he start to melt. But later Dumbledore said that the power was in Harry's skin (But apparently not at the neck).
Correction: The power is in his touch, ie. when Harry uses his hands - it doesn't necessarily apply to any part of his body.
Corrected entry: When the troll is in the girls toilets, it looks like there's only one line of cubicles, and he smashes the top half off twice.
Correction: he only smashed a few of the stalls the first swing, then the rest of them the second time. There is still only one row of stalls.
Corrected entry: Harry Potter has lovely green eyes. When Voldemort is about to kill baby Harry during the flashback, Harry's eyes are blue.
Correction: Almost all Caucasian babies have blue eyes initially - they only change colour as the child gets older.
Correction: The first shot of Professor Dumbledore taking out the lights is from behind him, looking over his left shoulder. He obscures the first car (a yellow one parked in the drive of what appears to be no. 1 Privet Drive). The second shot of the same scene is from some 50 yards in front of Dumbledore, looking towards him, and shot looking down from the height of a lamppost. The lamp obscures the second car (a blue one, parked in the drive of no. 2). Both cars can be seen when Dumbledore and McGonnagal walk towards Harry?s house.