Continuity mistake: When Sybok is alone with Kirk, McCoy and Spock, revealing their hidden 'pain', his robe is constantly reshaping itself from shot to shot. At one point, when McCoy grabs Sybok, the robe unwraps from Sybok's left shoulder, but is wrapped around him again seconds later. This continues noticeably through the entire scene. (01:06:55)
Continuity mistake: At the camp fire the whiskey bottle never empties. Almost empty, then full again.
Continuity mistake: As the shuttle nears the ship, they stop and are looking at the port side of the Enterprise. Inside the shuttle, as Talbot turns from looking out, the shuttle is pointed directly at the aft section, towards the shuttle bay. The it's back to port to begin the risky maneuver.
Factual error: When Kirk falls off El Capitan, he is shown falling all the way past the tops of the trees. I have been to Yosemite and the trees are tall, but not tall enough to give Spock enough time to slow then stop Kirk's fall.