Deliberate mistake: On Honor Day, while Jason is singing "It's a Long Way to Tipperary," when Ep and Sarah walk off together a few shots of them are flipped shots. (00:41:45)
The Inferno - S5-E20
Audio problem: While Johnboy and the press guy park, the Hindenburg is hovering over the aircraft field, while audible voices cheer alongside clapping and shouts. Yet, there is no visible crowd, but a small scattering of Naval comrades on the field. (00:17:23)
The Inferno - S5-E20
Audio problem: When the Hindenburg explodes, audible screaming and panic of ladies' voices are heard in the foreground, but no crowd is present on the airfield except for the Naval aircraft workers.
Continuity mistake: When Curt, Mary Ellen, and her siblings meet Vanessa at the bus station, in the following shots the amount of ice cream on the sticks goes from less to more, particularly Mary Ellen's. (00:02:10)
Factual error: When Elizabeth asks Zeb how Vanessa can be happy, Zeb has his old catalog with a bunch of flower seed packets on his lap, and as they both hold up the packets, particularly Elizabeth, the modern Universal Product Codes are at the back of the packets. The UPC did not exist until many years later. (00:10:05)
Visible crew/equipment: When Jason shows up to see Vanessa while Curt is loading the back of his van, as Curt closes the rear doors the reflection of crew, equipment, etc., is on the door window. (00:30:50)
Visible crew/equipment: When John-Boy visits the Baldwin sisters for an interview with Hilary, just as he and Miss Mamie sit down the T-mark is visible on the floor, in front of the fireplace. (00:16:25)
Visible crew/equipment: When Sara picks up Olivia she gets into the vehicle and they compliment each other, then as they drive away the reflection of location set lighting is visible on the small window of Olivia's door. (00:04:40)
Visible crew/equipment: When John and Hank stop off at Yancy's shack because he knows where the fish are biting, just as John and Hank approach the front door, a crew member is visible at the left side of the screen. (00:19:00)
Other mistake: When the wild hawk flies over and soon lands on the green painted chicken box, not only are different birds of prey shown in these shots, their flight feathers are also intact. When Zeb and Jim-Bob walk over to the bird, it's apparent that this hawk standing atop the box has the primary feathers clipped on its left wing. (00:31:00)
Visible crew/equipment: After Jim-Bob gets home he and John talk for a bit, then just as Jim-Bob walks behind his father and says, "I hope you find your fishing pole," the arm of a crew member is visible at the right side of the screen. (00:08:10)
The Recluse - S6-E3
Visible crew/equipment: When Jason and Fern stop for gas at Godsey's, just as Corabeth and Easy step outside to stare at Fern, the actors' two chalk marks are visible before they step on them. (00:25:05)
The Recluse - S6-E3
Visible crew/equipment: After the scene with Ben and his friends at the Hawaiian themed restaurant, when it cuts to the family sitting around the table, the tripod and rolling base of the set's lighting equipment are visible at the right side of the screen. (00:30:45)
The Recluse - S6-E3
Visible crew/equipment: Near the end, while John is working alone in the mill Ben shows up, and when Ben asks, "Need some help," a crew member is hiding behind the stack of drawers, toward the right side of the screen. It's not Zeb or Easy or any family member. (00:46:30)
The Seashore - S6-E5
Continuity mistake: Maryellen's pregnancy changes during the episode from her natural woman figure to a slight baby bump to a 9-month belly near the end.
Visible crew/equipment: After dinner, when G.W. and Erin walk outside there's a shot of the moon, and at the start of the next shot set equipment is visible behind the vehicle, at the left side of the screen. (00:10:55)
Visible crew/equipment: Camera lights are visible in the reflection of Maude's glasses in several scenes.
Visible crew/equipment: When Mary Ellen and Curt come back to the Walton house after the false labor, Olivia tells everyone to head back to their beds, and as they all disperse the white T-mark is visible on the floor, near the front door. (00:50:55)
Visible crew/equipment: After Mary Ellen tells Elizabeth that she guesses the question was answered during the meal, when it cuts to Jason playing the guitar the camera pulls back, and the T-mark is visible on the floor at the doorway. (01:00:25)
Visible crew/equipment: When Jim-Bob is in his car trying to get it going, in the last shot as he successfully drives away from The House, the reflector screen is visible at the left side of the screen, and the shadow of a crew member with filming equipment is also seen at the bottom, left side of the screen. (01:10:25)