Continuity mistake: In the scene where Lyle and Ursula slide through the river then over the falls, when they go over the waterfall they are both dry.
Continuity mistake: Toward the end of the movie, in the scene where Lyle and Ursula are in the rapids, Ursula takes control of the paddles. In one shot she has both paddles in her hands. In the next shot you can see one floating down the rapids, and when the shot switches again, you see that she has both paddles in her hands again.
Continuity mistake: When Lyle is covering himself with berry juice to represent blood, he swipes some across his forehead. His forehead already has the red mark on it before his hand crosses his forehead.