Gretchen finds the Kachina doll in Dewey's pocket. In most of the following shots the doll is in her right hand. In one, it is in her left hand.
On the horse ride Reese is ahead of then alongside then ahead of Malcolm.
Otto holds the bottle of schnapps by the neck in his left hand. Change camera and he holds it by the body.
Otto fires a Luger at Orion's belt in the desert with Hal, but fires 9 bullets in total. The Luger only holds 8 rounds.
Otto fires bullets into the sky. He points his gun forward which means the bullets would have landed miles away. They land where Otto & Hal are standing which is implausible.
During the fireworks scene with Hal and Otto, the fireworks are seen at quite some distance behind them, yet the explosions are heard simultaneously with the flashes. The explosions should have been heard a few seconds after the flashes, due the difference between the speeds of light and sound.
When hal hits the thing that is beeping with the stepladder the ceiling wobbles.
At Sunrise at Devil's Rock the tourists all have cameras but only Hal uses his.