(at around 36 mins) When Tina, Cal and Sara are desecrating the graveyard, Tina spray paints the angel. In the next scene when Cal comes back, the angel isn't spray painted. Later when Sheriff Howell is checking the graveyard the angel is spray painted again.
(at around 4 mins) When the Doyle's arrive at the mortuary, it's daylight. Within a few moments, Jonathan Doyle is in Bobby Fowler's old room looking outside to the graveyard and it's pitch black.
(at around 10 mins) On two occasions Jonathan Doyle reaches out with his right hand to touch the windowsill where the name of Bobby F is cut with a knife and yet both times the close up shot shows it is his left hand that touches the carved name.
(at around 13 mins) When Leslie Doyle is downstairs unpacking, the keys she finds in the broken pitcher of rock salt switch positions between shots.
(at around 1h 10 mins) When Jonathan, Liz, Tina and Grady are in the hallway after leaving the tunnel, Tina's hair is wavy, then frizzy, and then when they run in to the kitchen, her hair is wavy again.
(at around 45 mins) The embalming fluid in the tank Denise is using is green. Embalming fluid is never green; it is typically either clear, pink, orange, purple, or red.
(at around 1h 9 mins) When Jonathan, Liz, Jamie and Tina crawl up the ladder from the tomb through the tunnel through to the house, Tina is first on the ladder. Yet when they emerge into the house, she is second to last to come out.