Thank you for your post.
I'm unable to replicate the problem with FileMaker Pro 12.0v1 under Mac OS X 10.7.3. I have a database file with 100 dummy records, and I'm able to print, Save as PDF, and Print -> PDF without issue. There have been a couple of reports of similar symptoms, so instead of you trying to describe your database, it would probably be easier if you just send in a copy/clone of your database file so I can determine why it is failing on your end. Check your Inbox at the top of this page for instructions where to send the file.
Hmmm, as a quick test, try changing all the text in this report to a different font and see if that makes any difference. You may want to duplicate the layout and then make your changes for this test on the duplicate layout to keep your original layot intact.
I tried duplicating the layout and changing the font. Filemaker still crashed