Gold Is Where You Leave It - S1-E19
Revealing mistake: Buck lights the fuse and tosses the dynamite-filled barrel at the bad guys. We see the explosion. Unfortunately, after that, we can also see the intact barrel still rolling away in the dirt.
Gold Is Where You Leave It - S1-E19
Audio problem: After the Apaches rescue Blue, Buck signs to their leader and says, "Vaya con Dios to you too, brother." But his lips never move.
Gold Is Where You Leave It - S1-E19
Visible crew/equipment: Just before Buck tosses the barrel at the bad guys, a film crew member's shadow is visible on the adobe ruin's wall.