Corrected entry: When the mob is outside the Simpsons' home, they say, "No we won't, we just want Homer! However, when they burst in, Krusty says, "Teeny, get the baby!
Correction: So the mob lied. Or Krusty lied. Or Krusty wasn't one of the voices claiming they only wanted Homer. Or he changed his mind.
Corrected entry: In the mob scene the boyfriend of Milhouse's mother Luann is seen twice - he's somewhere in the middle, and also at the back of the mob.
Corrected entry: When Frink says he made an acid firing super drill, there are people next to him on both his left and right. In the next shot (where we see the acid firing super drill outside the dome), there aren't any people standing next to him on the right, just the left. (00:28:10)
Correction: Due to the camera angles it does appear to be the case. However, you will notice that just before the camera cuts to show the drill, all the people behind Frink are in a line. When we see the drill, the people are still in a line but the people furthest from the camera appear to be closer to Frink.
Corrected entry: When Homer returns home with Spider-Pig, Maggie's high chair is positioned to be facing the archway between the kitchen and living room. A few seconds later, after Marge realises Spider-Pig is the twisted tail, Marge says "I believe what happened in church was a warning about precisely this" and Maggie's high chair is suddenly positioned to face the fridge. (00:15:30)
Corrected entry: After the mob walks away from the wreckage of the Simpsons' house, Colin then knocks on the dome glass and a knocking sound is heard. Colin begins to play a song on his guitar and then the sound of the guitar can't be heard, despite the fact that we just heard him knock on the glass. (00:36:15)
Correction: The sound of the knocking was heard because Colin directly touched the glass so the vibrations could get through easily. However, when he was playing the guitar, he was standing further away so the vibrations had to travel through the air and then the glass.
Corrected entry: When Homer pretends to have a chainsaw and the hands come back to grab him, three more hands have appeared out of nowhere at the top of the screen.
Correction: As Homer is doing a chainsaw impression, we can see the top of the shot is the wood planks Homer hammered into the wall. The next shot shows, the three extra arms above the wood planks showing us the arms were actually there the whole time, but the arms were just out of shot.
Corrected entry: When Homer gets stuck in the sink hole, He says "Uh-Oh" but his mouth doesn't match what he says. (00:35:25)
Correction: During the second "Oh", you can just make out his mouth moving, which would have been enough to make his mouth match up with what he says.
Corrected entry: In the shot where Bart is causing avalanches, there is no lake/river by the house. When Homer decides to go and save his family one has suddenly appeared. (00:45:55)
Corrected entry: When Cletus is distracting Russ Cargill and the town is escaping, they use a radio tower to climb up to the rope. When Homer falls down the rope, the radio tower is gone. (01:07:40)
Correction: Actually the radio tower is on the ground, it must have fallen over.
Corrected entry: When Cargill visits the president a second time, he shows footage of Springfield continuing to attack the dome. He tells the president that "If people escaped the dome before, then it is bound to happen again." But when Cargill first appeared on the interior of the dome explaining its purpose, he mentions how in terms of using the dome, it had "never come to that", suggesting that the government had never used the dome before.
Correction: The people he was referring to who got out of the dome, was the Simpsons.
Corrected entry: When Homer shows the family his Alaska poster is has the word Alaska written on it, but later when he puts it on the windscreen of the truck the word Alaska is gone.
Correction: Look closer and you can see that not all of the poster is displayed on the windscreen the top is folded over therefore so is the word Alaska.
Corrected entry: In the scene where Homer and Bart are gonna blow up the dome they are riding on the bike round the dome. When Bart apologizes to Homer they look like they're floating in mid air rather than driving round the edge of the dome.
Correction: The shot is a closeup of them and they are moving at high speeds on a clear dome. It can appear that they are floating but they are still on the dome.
Corrected entry: During the Green Day concert, Edna Krabapple sits on Skinner and takes up the sweater that says "Not my boyfriend," but when Green Day is done singing "Da Da Da," they are not there anymore. (00:02:55)
Correction: They are to the left of where the wider shot cuts off - the entire audience is NOT visible in that wider shot. We have to presume that they are still in the audience, but we just cannot see them in that wider shot.
Corrected entry: The Simpsons team have confirmed that Dr. Nick Rivera did die when the glass hit him and that he won't come back after that.
Correction: It is true he did die. However, The Simpsons team also confirmed that he will come back to life and is seen live and well in "Lost Verizon" as Julius Hibbert's caddy.
Corrected entry: The audience throws cups and things on Green Day - but they don't have them before that.
Correction: Not everybody in the audience is seen prior to the crowd throwing items. Additionally you see Moe pick up a rock off the ground to throw, so essentially they didn't have to carry the items to begin with.
Corrected entry: Between the time Bart smacks onto the Krusty Burger window to when Ned Flanders offers him pants, the fries he has doubles.
Corrected entry: At the church, the lady plays "American Idiot." When the Simpson family comes in, she is still playing, but we can't hear a tone. (00:04:40)
Corrected entry: When Homer and Bart are headed for the sign of Springfield, it is intact, but in the close-up, the P has moved so they can stunt on it. Also I think that the sign might be whole even though it was cut in two earlier in the film.
Corrected entry: When Lisa is going door-to-door about Lake Springfield one of the houses floats away, in the next few frames there is no empty space where the house was.
Corrected entry: All of the Lard lads in the film have grey hair and red shirts. But in other episodes they were depicted as having brown hair and a blue shirt.
Correction: Differences between the series and the movie are not valid mistakes. If they appear differently in different scenes (or even the same scene) the movie it's a mistake, but not between the series and the movie.
Correction: They are trying to get in the house and kill Homer. I think what Krusty meant was remove the baby so it was easier to get to Homer.