When Eric and Lori are at the Reststop/Store, where Lori try's on clothes and Eric is seen purchasing a necklace, it is day time and the sun is out. Next, when Lt. Cristofuoro is driving in his car it is now very dark and obviously nighttime. However, when we go back to the next scene, as Eric and Lori explore the abandoned trailer and Lt. Cristofuoro shows up, it is now back to day time and the sun is out again.
When checking the back seat of his car for Eric, Detective Cristofuoro cocked his gun and the slide stayed open, showing the gun was unloaded. In the next shot, the gun's slide was closed.
Near the end when the Detective is sponging off his wife's body, she has bikini tan lines, which make no sense since she's been paralyzed in the hospital for a long time.
The scene when he is looking for Maria in front of the pirate ship ride you can hear people screaming yet the ride is empty.