Continuity mistake: Jason grabs from the cart a Canada Dry box with a basketball and some blue plastic stuff on top, and brings it to the garage. He then goes back to the cart, and meets his future best buddy R.J. Madison as he...grabs from the cart a box with a basketball and some blue plastic stuff on top. (00:09:35 - 00:10:30)
Continuity mistake: Jason wants to see the garage right away, knowing he's gonna set up some cool stuff there. He brings his basketball in front of the garage door. Between that shot and the one where he opens it, the natural light has completely changed; the house is not casting a large shadow behind him, the tree is, and his own shadow moved to the opposite side. (00:09:50)
Continuity mistake: Van Damme sprints when his buddy is forced to kneel before Stillwell; the problem with the cool sequence when he springboards off his back is that Stillwell in the shot when Goatee Guy went down had already regained his balance, while in this new action shot his leg is still raised. (00:05:30)
Continuity mistake: Sensei Tom Stillwell realises the threat from the bad guys being all evil in his dojo and jumps back yelling "This will solve nothin'." Before it cuts to a new view, he is looking away from the guy in a suit and looking at the others, but in the next shot he's still looking at the guy and only then checks Van Damme and the bearded dude out. (00:04:40)
Continuity mistake: When Scott is using the hose he is sitting on a chair with his house in the background. In the next shot the house is gone and there are some trees. The his dad yells at him and the house is back again.