Pifias

The changes of sky color from light to darkness makes the drive to the cabin a two-day trip, which is not consistent with the script.

When Meredith locks herself in the bathroom, the door is white; when Bruce bangs on the door, it is brown; and when Meredith opens the door, it is white again.

Despite using an Android phone, Meredith's text messages play sounds from Apple's iMessage.

When Bruce is running through the forest, you can see the shadow of one of the crew throwing leaves into the air.