Other mistake: When the Fellowship takes a rest after escaping the snowstorm, Gandalf and Aragorn begin arguing about which path to take from there. When Aragorn suggests the Gap of Rohan, Gandalf protests, saying, "That will take the Ring too close to Isengard," followed by "and Aruman" instead of "Saruman." (00:55:00)
Other mistake: The opening credits list Tomas Milian, Bo Svenson, Gille Kirsten, etc. Everyone (before and after) by FirstName LastName as customary, except Kirsten Gille.
Other mistake: When Bruce escapes from the avalanche by hanging on a tree, his movements are played at a normal speed, but the avalanche wave (superimposed footage) is moving at a slow speed.