In a scene where Stan is playing his twin sister who's married to Oliver, she's in the dining room wearing frilly ruffs on her wrists. But when she walks into the kitchen suddenly the ruffs are gone. When she come back to the dining room they're back.
When Stan and Ollie reach their front door the door blind is down as far as the door handle until Ollie shuts Stan out when it's a foot or so higher but when Stan knocks on the door it's then right down covering the handle.
Mrs Laurel's dress is torn by Stan after the rip has already been seen.
At one point Ollie's sister is sat at the table and a tattoo can be glimpsed on the inside of 'her' right arm , particularly if the frame is frozen,. It is believed to be connected to the masonic lodge that Ollie was a member of.