Other mistake: In the last scene when Jeep, Charlie, and the baby are driving off, the gearshift of the truck is located in "park". That is located at the topmost point of the gearshift's travel.
Other mistake: After Dan is killed by wolves you can see his corpse is covered by snow, only his hand is showing. When daylight arrives, you see that all the tracks on the slopes are still visible, and big patches of brown can be seen even though it's supposed to have been snowing at least 30 cms, enough to cover a human body.
Other mistake: The impression of Robin Hood's hands in cement, made as a child, match the size of his adult hands.
Suggested correction: There were two sets of handprints. The one on the left was that of a child. The one on the right was that of an adult. When Robin reopens the slab, the prints are covered in mud and debris. He runs his hand over the child print then puts his hand in the adult print of his dead father.
Other mistake: The protagonist is still a kid, and she is telling in voiceover about all the things she vows to renounce hoping to have her dad back in health. On the porch she knocks repeatedly on the wood, but the magical numbers don't appear. (00:05:00)
Other mistake: Harry pulls a knife out of Dobby's chest, but before that, we can see there's no knife.
Suggested correction: Yes there is, Dobby is holding on to it as he falls into Harry's hands. Its not totally obvious, but the CGI people definitely put it in.
Other mistake: They already stated nobody had TV when the young couple were flirting. Then as the tornado is about to hit the family home Dad rushes to get daughter Sam to go to the basement, and she is playing in front of the TV which appears to be broadcasting the news. Not to mention, if the TV was working, wouldn't most people be watching the news for info?
Other mistake: When robbing the bank at the beginning of the movie, Claire is somehow about to see the tattoo on the back of Gem's neck while he is standing, and she's lying on the floor looking up.