Revealing: In the hut in the swamps Zack lights a candle. The resulting light is obviously from a spotlight because the flame and the shadows are perfectly still.
Continuity: While Jack, Zack, and Bob paddle through the swamps they change places. This is hardly possible considering the shape and the shakiness of the boat and Bob's lack of swimming skills, plus there is no reason to take such a risk.
Continuity: When Jack and his girlfriend talk in his room she is lying on the bed, her head rested against a metal frame. In a different angle, seen from behind, the frame is gone and her head is on the pillow. Later it's on the frame again.
Continuity: When Laurette and Zack have a fight she throws his records around. First some whole records are lying on the floor, later they are broken and at different spots. Also some records on the bed disappear or change their places.