Corrected entry: In the Scene where Vernon tells everyone what to do when the Masons arrive. When he says "And Pertunia, you will be..." you can see Vernon mouth the words when Pertunia says "I'll be in the lounge, waiting to welcome them graciously into our home."
Corrected entry: If Mr. and Mrs. Weasley are so concerned that the kids will miss the train at 11:00 since they didn't arrive at King's Cross until 10:58, why wouldn't they allow Ron and Harry to go through the platform before they do? Wouldn't they have tried to get them through first so they could get on the train?
Corrected entry: Why would Gilderoy Lockhart use Ron's wand to cast a memory charm on Harry, the spell that backfires on him? Even if Ron's wand was intact, any wizard knows that the wand chooses the wizard not the other way around, and if you remember from the first movie, Harry caused quite a bit of destruction trying out wands that weren't made for him. Surely Lockhart shouldn't expect someone else's wand to work for him. (02:01:50)
Corrected entry: When Harry, Ron and Hermione made the Polyjuice potion so they could get into the Slytherin house, Harry and Ron made the sleeping draught potion in the cupcakes for Crabbe and Goyle so they could lock them away and not risk running into them in the house. Hermione was going to turn herself into a Slytherin named Millicent Bulstrode before the spell went wrong, but she hadn't taken any precautions like a spell to not see her in the house. What if she ran into Millicent in the Slytherin house looking like her?
Corrected entry: In the scene where Harry falls out of the car when they are trying to get away from the train you can see that Harry's hair is blowing in the wind. When Ron goes to grab Harry and pull him in Ron's hair does too, then when he goes back in the car his hair is still blowing even though he is in the car with the windows up.
Corrected entry: Fred and George Weasley are on the Quidditch team as Beaters - the players who keep bludgers from hitting their teammates. So where were they when the rogue bludger was attacking their star Seeker?
Corrected entry: Near the end of the film when Lockhart is packing up and leaving because he doesn't want to go into the chamber. Look closely in the mirror next to the door just before Harry and Ron enter the room. You can see Lockhart watching the door waiting for the boys to come in.
Corrected entry: Aragog says that he came from a distant land. How then, in the Dark Forest, did he find another spider to breed with and make all the little spiders?
Corrected entry: In the scene where the Weasleys are rescuing Harry from the bedroom, when Harry is still in the room he is wearing pyjamas, and also when the Weasleys are pulling him in to the car, but in the next shot, when Harry is already sitting safely inside the car, he is wearing different clothes.