What version of FileMaker are you using?
I'd like to use the same version to try and reproduce what you are reporting.
What you could try is creating a new, simplified copy of this layout without copy/pasting any layout objects from the current layout and see if the page number symbol works on it. That would help verify whether this is a Filemaker Bug to be reported in Report and Issue or a problem with your original layout--the layout itself could be damaged.
I am using FilemakerPro 13.
I think you pointed me to something that fixed it. When I created the layout I selected Computer and then Form instead of Print > Report since I did not want the data in tabular form. I wanted it more like a report document with sections and paragraphs.
I just created a new layout using Print > Report and then added a Header and a footer manually. I cut about four pages of fields and labels from my previous layout and now voila the page numbers are working. So I am not sure if it is because the original was corrupted somehow - but I think its because by selecting a Computer based layout the system keeps the page number as 1 since it assumes that you are looking at this on a screen and just scrolling down through the pages (even though they have footers).
THANKS!!! I'll keep playing and re-post if I hit any other errors.