(Some) pages resize when saving as PDF
My .book file has several chapters plus a TOC and an IX. Everything is formatted with the Letter (8.5 x 11) page size. I've saved the book to PDF several times and everything worked fine.
Today, when I save to PDF, my TOC and IX files are suddenly coming out 7.5 x 9, although their setting for "Letter" page size have not changed. They do this within the book and also as individual files.
The only thing I have changed today is the size of a graphic frame on the master page of the title page--a completely separate file from the TOC and IX.
I have checked the page layout settings of all the template files in my C:\Program Files (x86)\Adobe\AdobeFrameMaker11 folder, and everything is still set to the usual Letter size.
How do I fix this, and more importantly, what caused it in the first place?