Continuity mistake: When Lothario Larkin is visiting the girl he left at the altar, (Nancy I think) the scene opens, showing Lethario's carriage horse with a feed bag on. Moments later as the two are sitting together, the side of the horse is behind them and it turns its head into view, but there is no feed bag.
Visible crew/equipment: Two horses are tied to the hitching rail in front of the jail. In an interior shot, Lothario Larkin flings the jail door open and runs outside and to the right. The background is obviously a painted backdrop. It shows no horses, only the dusty street and a building on the opposite side. Larkin casts a shadow on the backdrop as he runs out.