Continuity mistake: When Mary Carson is touching Father Ralph when he is shirtless her hands keep changing position between shots.
Audio problem: When Meggie and Stu see the fire he cries "Oh my God". His mouth, however, is open when he begins to speak, then closes it, and it remains closed throughout the rest of the line.
Factual error: During the huge thunderstorm which causes the fire you can see that it's actually a bright, sunny day with only a mild overcast. Several times you can see the sky in the shots and though sometimes lightning bolts are visible there are only a few light clouds on an otherwise blue sky.
Audio problem: When Meggie cries "It's starting to rain" over and over, as she hugs Stu tightly her lips are not moving, even though she is still speaking.
Factual error: When Stu finds Paddy he has burned to death. Yet his clothes are still intact and not very scorched at all.