Plot hole: When Toby is checking everyone to make sure their costumes work, wheelchair-bound Bud is shown standing in a coffin-fixture. Since he was in the coffin costume, there was nothing there to be "holding" the character in a standing position, and he was obviously not in his wheelchair, as he is at standing height with everyone else.
Popcorn (1991)
1 plot hole
Directed by: Mark Herrier, Alan Ormsby
Starring: Dee Wallace, Jill Schoelen, Derek Rydall, Tom Villard
Genres: Horror
Continuity mistake: When "Tina" ties up Bud in his wheelchair, she puts a belt around his body. The belt shifts/rotates around his body between shots (you can tell by a patch on the belt, which moves around).