Continuity mistake: When Ralph sticks Sour Bill to a candy tree, the branch is directly under Sour Bill, but when Vanellope has become a princess later on, the branch is now facing Sour Bill's right. (01:13:00 - 01:28:15)
Continuity mistake: Heather swings a mic stand at Rodrick. In the shot showing her getting splattered by chocolate, the stand disappears from her hands.
Continuity mistake: When the Once-ler is drifting down the river in his bed, he puts his foot in the water, which makes the bed turn. When he puts his foot back onto the bed, it is dry and so is the bed sheet.
Continuity mistake: When Merida is climbing the rock to drink from the waterfall the rock is several meters away from the waterfall, but a few shots later it is centimeters away.
Continuity mistake: It was snowing relatively heavily during the Baxters' drive to the Christmas party. Right before Catherine called to check on the kids and told Alexis "it's really snowing up here", an external view of the house did not show any snow falling. (00:38:15 - 00:38:42)
Continuity mistake: When Dracula and his architect are going through blueprints of the hotel, Dracula is seen with a coffee in his hand. Mavis spits from the ceiling and it drops down to the table where the blueprints are. When they scan up to Mavis he has coffee, when they scan back to Dracula and his architect there is no coffee in his hand.
Continuity mistake: When Scrat arrives at Scratlantis, it is shown that the acorn-shaped island is formed by 3 land masses lined up. However, when Scrat causes the island to sink, a full solid acorn-shaped island is shown sinking. (01:17:00 - 01:18:50)
Continuity mistake: When Alex wakes up after having his nightmare about everyone becoming elderly, his eyes are blue. In the next shot, his eyes are green. (00:01:55)
Continuity mistake: At the end of the movie, before the Guardians leave, Jamie rushes over to hug Jack. In the first shot, the top of his head nearly reaches Jack's ribcage. However, in the following close-up shot, Jamie is almost at the same height as Jack's shoulders. (01:27:30)
Continuity mistake: When the mean Santa puts the little girl in his lap and asks her what she wants, she's wearing gloves. When it cuts to a different angle, suddenly her gloves are gone.
Continuity mistake: On "Ham Nite" The Pirate Captain starts doing his dance with a slice of ham on his sword. But by the time he does the splits, the slice of ham is no longer on his sword, but now on his plate. (00:03:50)