Thank you @ToddOwen and @Kirk for informing us about your initial experience. I now have a third person reporting the same problem. We’re looking into the problem and trying to figure out why this might be. Is there any other information you can give us about your computer (for example, are you running Windows as an Administrator, or with ordinary (non-Admin) user rights?)
I just tried PTXprint on a different computer and it came up looking like this when first run:
and indeed the “Print” button is grayed out. But as soon as I selected a project and a book, then it changed to enable the button and other pages.
Something else to try: Use the (rather hidden) slider to Show Advanced Settings to see if anything changes:
You may need to close and re-open PTXprint for it to take effect.