Factual error: When Preach hears Cochise is in trouble, he is shown running down a street looking for him. In the driveway of one of the houses is a maroon 1973 Chevrolet Monte Carlo, but the movie takes place in 1965. (01:03:15)
Continuity mistake: George's collar on his leather jacket is sometimes up, down or somewhere in between, in successive shots within a particular scene, depending on the camera angle. Additionally, his long neck scarf changes position numerous times, in shots following one another within the same scene too. One example is in the salon with Felicia and Jill. (00:18:20)
Factual error: While Stanley Kubrick boasted about the authenticity of the candlelit interiors, he must have missed the little drawing of a steam train on a period map - 40 years before trains were invented.
Audio problem: In the "How Lucky Can You Get?" musical number, when Fanny is turning on the stage lights she is not singing, although Streisand's singing voice is heard on the soundtrack.
Continuity mistake: In the acupuncture parlour, when Sylvia Kristel begins masturbating, the needles are gone from her nipples and are nowhere in sight. (00:33:05 - 00:34:35)
Continuity mistake: In the opening interview with the trucker, the wide shots with him leaning against the grill show just a few thin hair out of position. In the close-ups he sports much messier hair with large curl out of place in the middle of the forehead. (00:00:50)
Continuity mistake: As the animated film opens, Charlie Brown's mailbox has a small red flag that is attached to the rear of the mailbox with the flag facing up. At the end of the film, the flag is attached near the front of the box and it is facing down.