I don't understand what you mean when you say "downloading"?
Are all the pages present in the PDF if you open it in Acrobat?
Excuse me, I meant "export" as a PDF. When I try to export it as a PDF and open the new PDF file, it only opens one page.
Check the export options to make sure that you chose all pages.
try the following:
Do not set your page range to "All".
Instead type in the range editing field exactly that:
That should send all pages to PDF output. From page 1 in the document to the last page in the document.
Regardless of page names or sections or alternate layouts ( and what not ).