Visible crew/equipment: At the mill, when John tells Buck that Willie Brimmer might be at the Montgomery cabin with Jim-Bob, in the next closeup of John we see a billowy trail of cigarette smoke at the bottom right corner of the screen, but the only people standing there are Elizabeth, John, and Buck, and none are smoking. Presumably, it was someone offscreen smoking too close to the camera (similar to a mistake in 1978's "Halloween"). (00:26:05)
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)
Other mistake: After John-Boy leaves, in the last scene we hear Jim-Bob ask about the magazines, but subtitles claim it is Ben who asks, then as we hear Jason answer the question, the subtitles tell us it's Jim-Bob who answers (on Warner Bros. DVD). (00:47:00)
Visible crew/equipment: After Zeb tells the girls that the old dog, Sam, just wants to find a place to die in peace and dignity, when it cuts to John and Willie working inside the mill a crew member (wearing a red, short sleeve shirt) is hiding, toward the right side of the screen. Then after the shot of the girls on the hill, at the start of the next shot as the truck drives up, a bit of camera equipment is visible at the top, right side of the screen. (00:43:00)
Factual error: Jim Bob is shown communicating with friends in the UK via amateur radio. During WW2 amateur radio operators in most countries were prohibited from transmitting any signals until after the end of the war.
The Return - S6-E20
Visible crew/equipment: When Hank gives John-Boy a lift home, he opens the rumble seat and places his bags inside. During the drive, a crew member's hat is moving around in the rumble seat area, at both the left and right sides of the screen, particularly the left side. (00:14:00)
The Return - S6-E20
Visible crew/equipment: When John and his son visit Mr. Guthrie at his home, just as Verdie opens the door to the study, behind Mr. Guthrie the black T-mark is visible on the floor at the left side of the screen, where they will all stand shortly. (00:33:00)
Visible crew/equipment: When Erin and Elizabeth help Daisy unpack in their bedroom, just as John-Boy walks into the room, the lighting equipment is visible at the left side of the screen. (00:20:55)
Revealing mistake: While John-Boy is in his old bedroom with John Curtis, having a heart-to-heart conversation with the baby, in all the wideshots from behind the crib the edge of the set is visible at the right side of the screen. (00:21:20)
Visible crew/equipment: When Jason and Verdie go back to the Unwin estate and this time are accompanied by Zeb, they are told that Miss Unwin is at the greenhouse, then just as Jason drives on ahead a few of the crew's modern-day trailers are visible at both the left side and the right side of the screen. (00:39:15)
Factual error: While Jason is practicing piano at the Dew Drop he hears the horn playing outside, then when he walks out of the back door he sees Josh on the trumpet, and in the first shot of Josh we see a blue modern vehicle moving behind the bush, at the top left corner of the screen. (00:05:00)
Visible crew/equipment: While Mary Ellen is sitting on the couch reading Gone with the Wind during her break, when David walks in and sits down beside her, the shadow of the boom mic is moving around on the wall, at the right side of the screen. (00:16:05)
Continuity mistake: When the telephone rings Olivia walks over to answer it and the front door is open (we see the screen door), but when everyone rushes from the table and gathers around Olivia, the front door is now shut. (00:28:50)
Visible crew/equipment: When Jim-Bob drives Ruby home, after she kisses him we see the bulging outline of the mic transmitter and its wire on Ruby's back, as she walks toward the door. (00:23:25)
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: After the scene with Ben and his friends at the Hawaiian themed restaurant, when it cuts to the family sitting around the table, the c-stand and caster rolling base of the set's equipment are visible at the right side of the screen. (00:30:45)
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)