Hello,
I have an application on apex.oracle.com that I'm attempting to get to print to PDF. I have followed the steps provided in http://www.oracle.com/technetwork/developer-tools/apex/learnmore/custom-pdf-reports-1953918.pdf and the steps in the video and blog at Marc Sewtz: PDF Printing with Oracle Application Express 4.2.2.
So I'm using APEX 5 and generating my XSLT-FO template using StyleVision 2016.
I created the apex classic report and exported the XML data as described. I then followed the steps for StyleVision and everything seems fine. However when I upload the XSLT file as the report layout and apply it to my report I get an empty/error PDF file. Screenshot is below.

Now if I set the report print attributes back to PDF -> Default layout I can get a PDF of the report just fine. It's just when I try and apply a custom layout that the issues seem to appear. Has anyone else come across this? I have also tried this on my company DEV APEX, 4.2.3, and have the same results.