There are a few methods available when attempting to get the automatic paging to work when doing a scrolling capture with screenshot captor..
You could also just set Screenshot Captor to capture and stay minimized and do page down manually, just hitting page down, prtscr, page down, prtscr, etc.. which shouldn't be too painful once you set Screenshot Captor to not pop up any dialog after each capture.
The other option would be to script the process using some tool and using a commandline screen capture like my MiniCap (
https://www.donation...r/MiniCap/index.html).
"I'm not sure if it can be set to save separate shots per page (which I presume you'ld prefer), as opposed to making one long screenshot."
Screenshot Captor does now have an option to save each screen as a separate image (it's under the ... button after you finish the scrolling capture).