Continuity mistake: Miles is attempting to spin through a loop on his motorcycle. The first time he performs the stunt, he drives half way and falls out of the loop and lands on the ground. As soon as he and the bike land, the bike is positioned with the bike's wheels facing away from the loop. Miles is then helped up and the bike has suddenly shifted 180°, with the wheels now facing towards the loop.
Revealing mistake: Near the beginning, after a couple of small earthquakes, Fred comes flying out of the dam elevator shaft with a whole heap of water, dead from drowning. But you can see him lift his head out of the water seconds before his friend turns him over and finds him definitely dead.