At the square dance, Allison is paired off with an unattractive woman during the ladies' choice dance. When Virginia cuts in to dance with Cliff, Allison passes behind with a different partner, only to be shown in the next shot, still dancing with the unattractive woman while the woman in the previous shot cuts in with him.
Although set in 1880, during the stagecoach chase, there are obvious tracks from modern pneumatic tires in the dirt road. They are especially obvious when Cliff and Virginia are slowly riding back to town.