Continuity mistake: As Walter and Mae arrive at the Uncle's house, Mae gets out of the car and fixes her make up. In the wide shot she does not have her parasol in her hand. The close up shows her parasol in her hand.
Continuity mistake: After Walter jumps out of the car when he was leaving with his mom and Stan, he runs along the left side of a bridge. There are two wide shots from below where he is running on the right side.