Character mistake: Just after the shootout between the robbers and the armored truck drivers at the dip in the road, the teacher that is with the robbers pumps the shotgun about 3 times, without firing a shot after they crossed the water. This would just waste a perfectly good cartridge, since they hadn't been shot yet.
Hard Rain (1998)
1 character mistake
Directed by: Mikael Salomon
Starring: Morgan Freeman, Christian Slater, Randy Quaid, Minnie Driver
Audio problem: When Jim has been pushed out of the boat by Sheriff in the church, his voice is heard echoing "no" at exactly the same time that he is spitting water out visually.
Answer: Because the Sheriff wanted to kill everyone, leaving no witness. Remember the old saying, "The Enemy of my Enemy is my Friend."