you're doing one of the steps wrong ??? There are a couple of areas where you need to do stuff that are not in quite correct order..off to the side and stuff...so if you forget one of the side steps, maybe it doesn't work... not sure what else it could be.

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854