Other mistake: Sam draws an orange vest for Lockwood using a dark crayon. (01:10:45)
Continuity mistake: Flint's lab, despite being crushed, filled with food, and knocked down in the first film, is not only fixed to the point it can hold all the water, and empty of food, but is also strung up high and the tube is connected again.
Character mistake: When Barb introduces herself to Flint, Steve calls her a monkey, and she corrects him saying that she's an "Orangutang", pronouncing the G at the end. But the correct word is Orangutan, with no G sound. Barb would surely know this, as a genius ape.
Character mistake: Flint, despite pronouncing the name of the FLDSMDFR perfectly and berating others for failing to do so in the first film, now pronounces it incorrectly many times, sounding closer to FLDSDFOMNR.
Plot hole: If Chester's plan was to steal the machine the entire time why didn't he just have his people steal the machine while it was still floating in the air during the first film? There was plenty of time to capture it before the food started mutating so what was he waiting for if he needed it so bad?
Suggested correction: Because he wasn't there in the first film? He first made an appearance in this film, doesn't know how to work the machine without Flint, and how the hell would he even get it in the sky? He also didn't even know about it, or what happened to Chew and Swallow, again, until he made an appearance in this film. Not a mistake.
