In the credits, Lily's name is spelled Lili, as well as on the Jerry Goldsmith soundtrack. In the U.S. version, in the blurb at the beginning, her name is spelled Lily, as well as in the Scene Selection on the DVD.
As Lily's sword cuts the unicorn's chain freeing it, Jack shoots his arrow at the Devil and you can see the arrow strike his neck on the left side. However in the next shot you see that Jack has not yet released his arrow.
In the US version Jack's shield jumps from being in his hands to hanging from a tree as he decapitates the swamp monster before entering the giant tree. (In the Director's cut, the removed scene explaining why the shield was moved is restored).
Lily can clearly be seen as Jack prepares to jump back in the lake to retrieve the ring at the end of the "director's cut" (the correct end take without Lily can be seen in the concluding moments of the U.S. version).
Throughout the movie, the Unicorns have mismatched genders. It can clearly be seen when the animals rear up in the air. One example of this is when Brown Tom is guarding the "mare", and Lily trudges through the snow, frightening the horse.
Before Jack and Darkness fight at the end, Darkness has Jack up against a wall, face to face. Shot from a side angle, you can see that the skin around Darkness' chin and lower jaw are not attached to his head indicating that the skin is synthetic rubber.