Other mistake: When the fighter jet says he has a missile lock, the shot cuts to the screen. You hear the characteristic beeping of a missile lock, but the screen shows only open sky.
Other mistake: During the train chase Wallace steps onto the train track that's going to the left on-screen, then he goes to the right as if the train is going the opposite direction on the track.
Other mistake: Before the opening scene, where there is a paragraph setting up the history of the musical, in the third line there is a spelling error: "it's" should be "its" since it is a possessive pronoun and not a contraction.
Other mistake: After the Leprechaun has used the small car with the pitchfork and rammed the pick up truck, it rolls down the hill 3 or 4 times. The leprechaun opens the door and all 4 characters are not in the vehicle. They have not only managed to all exit the vehicle and hide behind a boulder but have all managed to not receive so much as a single scratch and Jennifer Aniston's hair is still perfectly brushed.
Other mistake: When Michelle removes her mole to give it to Topper, it pops off and is visible for a split second in front of the pinky knuckle of the hand she removed it with. They continue on as if she successfully removed it and gave it to him. (00:50:06)
Other mistake: When Benny is introducing Smalls to the rest of the team, Yeah-Yeah is introduced with Benny saying, "Alan McClennan. We call him Yeah-Yeah." However, all forms of subtitles/closed captioning read, "Alan McClellan. We call him Yeah-Yeah."