Other mistake: When Sophie is babysitting her sister's kids, they show her playing a dance game. In one shot of the TV, you can see there is no arrows going up but she is still dancing. (00:17:30)
Other mistake: While Jude is watching an expose on himself, the commentator says his real name is Aaron Jakob Heckleman, even though Jude Quinn is the name listed in his high school yearbook shown earlier in the film.
Other mistake: Two mistakes in one scene. Continuity Error: As Dewey's father is dueling with Dewey with a machete, Dewey's father cuts a ladder in half. Later in the same scene, you will notice that the ladder is whole. The second (Revealing Mistake) shows a wire leading up from the barn floor to Dewey's father's bottom half, supporting the effect. (01:12:10 - 01:13:05)
Other mistake: When Evan is conducting the orchestra, his conducting pattern does not line up with the downbeat of one as the camera angle changes.