Continuity mistake: In the scene where they go to Elwood's apartment, Elwood puts on a 78 RPM Decca Louis Jordan record. The record is entitled "Saturday Night Fish Fry". But the song that plays is "Let The Good Times Roll".
Continuity mistake: In the art studio Richie is working on a painting and it only has a small part finished. In the next shot the painting is completely finished. (00:08:25)
Continuity mistake: Popeye goes to Bluto's ship. He finds his pappy there: he's tied to the chair hanging in the ceiling. Popeye gets excited, and notice that before he hugs his pappy he takes his pipe out of his mouth. When we see Popeye again, the pipe is back to his mouth. Too fast to be real.