Other mistake: At the very end, the Durmstrang ship is leaving, it's away from the 'bank', firing its cannon. And then we see the Beauxbatons girls leaving Hogwarts... Followed by Durmstrang students whose boat has already left. (02:22:00)
Other mistake: Lavagirl burns everything she touches, but in some shots she touches Max's shoulders and doesn't burn him.
Other mistake: The short scene wherein Jane's mother is carrying a tray of food to Jane's room and says, "This isn't a home. It's a hotel" doesn't make sense. There's already a tray of food on the floor next to the door that has a sign "Please, do not disturb" hanging on the knob, which is on the left side. Jane's mother passes that door and stops at a door right next to it with a "Do NOT Disturb" sign hanging from the knob, which is on the right side. Two close-together doors to one bedroom? (00:45:50)
Other mistake: In the beginning when Tyco is a puppy, it is raining but the blanket that is in the box is still dry.