Continuity mistake: After the campers take over the camp, many counselors are tied to trees. When the kids are putting honey on Lars, the left strap of his tank top falls down. In the next shot of Lars crying with the deer, the strap is back upon his shoulder. (01:09:19)
Continuity mistake: The stack of books falls over when Roy breaks into the room. However, when they leave, the same books are stacked perfectly.