Continuity mistake: When Katelyn puts on her hockey skates, her leggings are not on. When Ronnie returns the skate it is white. Her skates suddenly appear as neutral and her leggings suddenly appear.
Other mistake: Throughout the movie large footprints of heffalumps are shown. However, when the heffalumps bound around, they never create any footprints of any kind.
Audio problem: When the giant petrel bird attacks the penguin chick, the bird noise is that of a skua not a giant petrel.
Continuity mistake: The movie starts with Pooh eats all the trick-or-treating candy, but later when Eeyore comes over to Piglet's house, you see each goody bag sitting on the floor from inside the house.
Revealing mistake: When the wall is falling you can see the wires pulling it over.
Continuity mistake: Marge is walking along a sidewalk with her daughter and her dog and carrying a large paper bag full of groceries. Ted and his dog Bailey spot her. Bailey races forward and knocks her down, spilling the groceries. When Marge picks up the bag, it is now a plastic sack. Ted drives everybody home and when Marge gets out of the car, she is once again carrying the paper bag.
Continuity mistake: Stitch, toward the end of the movie, scratches Lilo on her face just before he runs away to try to leave the planet. Lilo goes on stage to do her song and the scratches to her face are now gone.
Continuity mistake: The exterior front view of JD sitting in a chair, bent over with his hands folded between his knees, shows his guitar facing outward but the interior rear view shows the guitar angled toward JD. (00:46:45)