When you render a form guide, you define and XFAForm variable, and you specify an orchestration to use to render the form guide. By default, this orchestration is supplied as one of the orchestrations in the Process category, called "Default Render Form Guide". (I'm going from memory here, hope I've gotten it right.)
What you need to do is open that orchestration, where you will find a renderFormGuide step - click on that step, and locate the Guide PDF property - set it true.
If you still have problems, email info-at-avoka.com, and we'll give you a hand.
Howard
http://www.avoka.com