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When Butters is in the hospital, you see blood start coming down his cheek, but when the shot changes from a top view to a view from his feet, there is no blood running down his cheek, which should've started showing in the shot already. When the boys are walking through the fair and spot the weapons store, you can see that there are some yellow nunchucks, but when the angle changes position you can see that there are red nunchucks right there. In the town hall meeting scene, a man says that he is "shocked and appalled" by what has happened. In the wide shot, he is sitting next to Liane Cartman. In the closeup, Liane is replaced by a woman dressed in purple. In the next wide shot, Liane is back.

and when Cartman first says "i have the power to have... all the powers i want."
Stan tells him he he doesn't get to have any powers.
when Cartman tries to attack professor chaos he says Kyle took his powers from him.