Just before Luke Fraser crashes his car on the highway, he looks up and sees a bridge. When we see the crash, there is no bridge in sight.
When Cassie and Dan are in a tavern, her glass changes positions twice on the table.
(at around 24 mins) Luke Fraser puts an Art Gallery DVD into a standalone DVD player, whose remote control is clearly sitting on top of the player, but he interacts with the disc using a mouse as if it were in a computer's DVD-ROM drive. You can't connect a mouse to a standalone DVD player - it only works with its remote control.