Thank you for your post.
Which version of FileMaker Pro are you using?
What operating system and version of operating system are you running?
What application is viewing the PDF files?
When selecting Save Records As PDF, are you using "Records being browsed", "Current record" or "Blank record"? Any Options set?
I'm using Filemaker Pro Advanced 8.5. Mac OSX 10.4.
Acrobat Reader to displey the PDFs and I've tried all three options, "Records being browsed", "Current record" and "Blank record" with no results
What do you see when you bring up the layout you want a PDF of and enter preview mode?
Have you tried making PDF's of other layouts/other layouts in other files?
This info will help narrow down possible causes.