Goofs

When the letters fly off of the movie theater sign, they land all around Suzanne, scattered all over the floor. However when she walks over to the box office, to collect the ticket, the letters are nowhere to be seen on the floor.

When Suzanne is trying to talk her daughter out of going to the movie marathon, Maggie's reflection can be seen turning and heading across the room. In the next shot, Maggie is just starting to move.

Twice - while he is climbing off the theatre sign, and when he lands in the boxes on stage - Mark is wearing round-toe rugged sole lace-up boots. in all the other scenes he's wearing pointed-toe cowboy boots.

At the beginning of the scene where Dreamland is open, there is a shot of Maggie serving a man dressed as an alien. In the first shot, the man gives Maggie his money and his hand is bare. In the following shot he has a green alien glove on.

When the letters fly off of the movie theater, and land around Suzanne, only a "Y" flies off in the first shot. When it goes back to the movie theater sign, a lot more letters are missing. In addition, the "P" from the word 'Plus' is missing in one shot, but in the next shot they do a close-up of the "P" flying off, even though it was previously missing.

The meta-film "Mosquito!" is supposed to be a black and white 3D film to be watched with blue and red glasses, but when the images are project on the screen it looks like a regular b&w film. It was supposed to have blue and red lines on every frame to create the 3D effect.

When the killer is putting masks on in front of Maggie, you can see the dead body of Tina hanging behind Maggie. The dead body moves/shakes/breathes many times throughout the scene.

When Mark says to Maggie "No disguise looks that real that close up," Maggie replies "Maybe," but her mouth clearly says something else.

After Maggie sells The Possessor a ticket, she realizes who it was, and runs out of the ticket booth and over to Tina, and speaks with her quickly. As Maggie speaks with her and then goes off, reflected in the glass is a crew member/cameraman in a red t-shirt.

In the montage, where the group are getting Dreamland prepared for the Horrorthon, in one shot we see Bud fiddling with the electronic box (which is unplugged). As the camera pans backwards, you can see the shadow of a crew-members head wearing headphones, cast on the electronic box.

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.