When Luke gets punched in the face and begins to fall, the chair starts to tip to the side. However, it is standing upright in the next shot.
About 7 or 8 minutes into the movie Alan Ladd is reading a telegram that had been crumpled. Then it cuts to a slightly farther shot and everything is still in about the same position but now the telegram has not been crumpled.
Just after 23 minutes into the film, Whispering Smith is given a harmonica, the box of which he drops to the ground, only to have it immediately reappear in his hand.
When Murray punches Luke, he falls sideways off the chair. However, in the shot of Luke landing on the floor, he lands on his back.
When Luke Smith is pouring coffee for Bill Dansing in front of the Boarding House, one instant he is pouring coffee into Bill's cup and the next he is pouring coffee into his own cup.
Whispering Smith (played by Alan Ladd) is sitting on a high porch. He reaches into his pocket and takes out a harmonica in a box, which he throws away. After playing a tune on the mouth organ, he goes back into his pocket and takes out another box in which he puts the harmonica.
When Smith shoots his horse, the shadow of the dollying camera can be seen crossing his arm.