When they all go to the carnival, Rusty is wearing a black mini skirt. In the Director's Cut version, the next scene after Rocky and Rusty looking at his reflection in the fun-house mirror is the campfire where Rocky and Rusty perform Little Egypt. Here, Rusty is wearing black jeans. The next scene, after the fist fight breaks out at the campfire, is Rusty and Gar kissing on her front step, which appears after the funhouse mirror scene in the original and Rusty is wearing the black mini skirt again.
In the final scenes when Rusty destroys the kitchen, after she has taken the mug and destroyed all the glasses on the wooden shelf, the next scene in which she walks back into Rocky's bedroom, you can clearly see that there is blood on the right side of her forehead, making it appear as if she apparently got cut by some of the flying glass.
Early in the movie, set in 1979, Rocky and Ben come home from trick or treating and talk about selling their candy at school on Monday. Halloween 1979 was on a Wednesday; they wouldn't have had to wait until Monday.
When recounting the beginning of the Trojan War to his class, Rocky mentions the Trojan horse. The teacher doesn't correct him, even though the Greek story states that the Trojan horse ended the war many years after it begin.
When Rocky looks in the carnival mirror it alters his deformed face to appear almost normal. They send for his mother (Cher) to look at him. The same mirror that altered Rocky's face to appear normal should have deformed his mother's face. But when you see them looking in the mirror, Cher's face is looking perfect. Also, Rocky's nose casts a shadow in the mirror; on his actual face, the bridge of his nose casts no shadow.