Continuity mistake: When Charlie brings the haggis to his parent's house, the sun is still shining when he parks in the driveway. When seen from inside the house as he enters, it's now very dark outside.
Suggested correction: It's not very dark outside, you can see the light from in the widows. It's just that's lot of windows are covered up so it's hard to tell. But the front door is in alcove with a roof eave over it that puts it in the shadow, which makes it look dark behind him.
Continuity mistake: When Charlie goes onto the roof after Rose gets stuck by the closet, the lights are off in the hotel room because the power is out. But when they show Charlie climbing out of the window, the two windows in the shot have lights on, as though there were lights on in the actual rooms.
Suggested correction: You can see the lights come back on as Charlie is running towards the window. The power comes back on before he gets on the roof.