I've been trying to follow the workflow of the tutorial as closely as possible, but I got stuck at the "Modeling and rigging the claw" stage. Originally I needed to generate three claws that were exactly the same shape.
When I applied object offset to claw duplicator(Triangle one), somehow all three ended up being different sizes. The three should have been exactly the same size and shape. Since the same question was posted I think this needs to be addressed.