The courtroom scene takes place in a California state court, but the wall behind the judge bears the Great Seal of the United States, which would only be found in a federal court.
Charlie says he's "taken a residency at UCLA. I'm directing two plays at REDCAT." REDCAT is the performing arts center of CalArts, not UCLA.
Henry makes coffee for his mother and she takes a sip, but the cup is empty.
Singing by the women does not always synch.
(around the 1:10:00 mark) While Henry and Charlie are talking after going trick-or-treating, Charlie's voice and laugh does not sync with the video while he's speaking about the play in Denmark.
The camera's shadow is visible on Nicole's back when she comes out from the subway station at the beginning of the movie.