While you are preparing the page, try using the Site Pane to see if your paths are not accidentally parented by other items. If they are, then un-parent them. Make sure that your paths are children of the page itself, not any other item on the page.
Thanks for this second post Paul - it was the bit about ‘parents’ that nailed it!
I’m doing a centred box layout based on Dan Jaskar’s tutorial, so there are many parent/child relationships. I tried your action starting from a plain blank page on a new site and it worked straight off.
My difficulty now is how to incorporate it into my main site layout if this is possible. I guess for a beginner I’m being pretty ambitious, but FW gets you that way