When Ryan is in the hospital, you see a man carrying a windowpane with tape on it (cross-shaped). A second later, you see that man putting the pane in the window, but the tape has disappeared.
Ryan is driving by a corn stand on a rainy day. A second later he's driving down a dusty road.
During the ambush scene, the Mercedes van changes from a black one to a silver one.
The death penalty was abolished in Minnesota in 1911, so he would not have been sentenced to execution in Minnesota.
When Ryan deactivates his car security system you can see that his car steering wheel lock is on, but once he sits in the car it is gone without him even touching it.
Before getting on the prison bus all the inmates got funny name tags put on their prison uniforms but while they are on the prison bus those name tags are missing.
A member of the crew is reflected in the car door when Falls gets out of his car in front of the hospital.
During the face-off with the police at the end, Lauren's pistol is clearly a prop, as the barrel is covered.
When Ryan Harrison goes to the corn field in the car he hot wired, he gets out and you see a British Columbia license plate. He is supposed to be in Minnesota.