Other mistake: In the scene where the mayor is talking behind the chainlink fence, with Brent in the background eating Sardines, you can see as the mayor grabs the fence the fencewire is going through his thumbs. This is on both hands and easily visible.
Suggested correction: I watched this movie a million times and the mayor's thumbs are not going through the fence.
Other mistake: When Flint configures the computer to rain breakfast, he types the eggs as "over easy". However, when breakfast falls, all of the eggs are sunny side up. This is not likely an error of his invention because in every other case it produces the food exactly as he inputs it.
Other mistake: When Sam reports on the Spaghetti tornado, she reports that she is broadcasting from Chew and Swallow. This is the name of the town from the original children's storybook, which was changed to Swallow Falls for the movie. (00:51:10)
Suggested correction: They changed the name to Chew and Swallow to promote the mayor's food tourism idea. It WAS Swallow Falls before his invention. There is a scene where you can see them destroy part of a sign. CHEW and SWALLOW (Falls).