Best movie mistakes of 1930
Factual error: Oliver Hardy, inside a telephone booth, looks up Stan Laurel's number in a large directory. He finds the number on a page which is about one-fifth of the way from the beginning of the book. After he calls Stan and Stan hangs up on him, Ollie looks up the number again. This time he finds the number on a page which is about three-fourths of the way from the beginning of the book. Names beginning with "L" would not be on either of those pages but would be approximately two-fifths of the way into the book.
Continuity mistake: Oliver Hardy is teetering at the top of a ladder which is in the back of Stan Laurel's car. Stan is driving west on Wilshire Boulevard when Oliver, and the ladder, fall into the street. Oliver gets back into the car but now is it inexplicably atop the streetcar tracks and facing the opposite direction.