Continuity mistake: In the scene where the mother and boss of the company is giving a speech, in one shot the puppy she is holding is resting on her shoulder; in the next shot it is lying in her arms, and then finally in the next shot it is back to resting on her shoulder.
Continuity mistake: During the entire RV scene when Josh is going to NYC, it is obvious the 'living room' slide of the RV is extended. In the shots looking forward, the seat is well left of the driver's window.
Continuity mistake: When Lea Michelle is trapped in the elevator she is wearing black nail polish on short nails. When she performs her solo her nails are now painted white and are longer.