Continuity mistake: When Bowen first catches up to Draco under the waterfall, he is completely soaked as he stands there and talks to him. Draco takes off flying and Bowen goes after him on his horse and is now completely dry, hair and all.
Continuity mistake: When the evil King Einon goes to follow his mother into the passage to kill her with a spear, you can still see the back of him by the time you hear her death scream. His arm wasn't even in a position to thrust a spear at her.
Trivia: The names of the dragonslayers hired by the Queen are Uhlric, Cavan, Ivor, Tavis, and Trahern, according to the novelization of the film by Charles Edward Pogue. None of the dragonslayers are listed in the credits.