Factual error: On their journey, Rooster is bragging about his navy colts, when actually his sidearm is a Colt .45 Peacemaker, also known as an Army Colt M1873.
Continuity mistake: After Willy Clark has a heart attack, Al Lewis goes to his apartment for a visit. Willy's nephew Ben is standing between the two men with his right hand resting across his stomach. In the long shot, his right arm and hand are alongside his body.
Continuity mistake: Speed is having oysters after the losing effort with his first combatant. He glances back at his table and spots a smiling Charles Bronson suddenly there. Notice the position of the towel; when he gets back to the table with his refill of mussels a moment later, the towel changed position. (00:08:05)
Continuity mistake: When Gary is in the restaurant with Julia he writes out the card asking Joe Baker to join them. As soon as Gary picks up his pen the angle changes and the note is written in full.
Continuity mistake: Friday is at the fashion show, and after arguing with her friend who called her on NYE, she is talking with the photographer. She is about to playfully slap him; between these two shots a quite noticeable lady in furs and purple polka dot dress is walking from left to right in the first one, right to left in second. (00:20:55)
Factual error: This film is set in the 1960's. The Ford transit van belonging to Russell, the group's roadie, is a facelifted 1971 model.
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.
Revealing mistake: When the protagonist jumps two of the evil cowboys that are after his jewels, the stuntman on the right tosses aside the rifle in a quick deliberate move pretending to lose it. (00:10:25)
Audio problem: When Kipper are performing towards the end of the film, Tim the drummer is late on stage and the other band members have started to play their instruments, but you can still hear the drums play before Tim picks up the sticks.