When Max is walking his dog, he meets Cammy unpacking the car. She gives a box to a girlfriend, and then gets a black tub (with Jack O'Lanterns on it) from the car. In the next shot, she, again, takes the box from the car and gives it to a friend, and then gets the black tub from the car again.
The "ghost hunter" article the kids look up on the computer has repeating text about Beowolf and is not at all what the headline is about.
The "maple syrup" that Colin drinks is too thin and fluid to be maple syrup.
On the building, "City Hall" is misspelled as "CTTY HALL".