A new version of Pirform for BS 7671 Amendment 3 was released on 13th December 2015. This release brings back the PDF generation into the desktop program.
One thing to note is that the release requires the Microsoft .NET Framework 4.6.1 to be installed on your computer. If that's not already present, the Pirform installer will download and install that from the Microsoft site. Alternatively, you can download and install it from Microsoft yourself. Read more here:
Update: 2016.1.1019 released on 14th Dec 2015 to fix schedule FI items not loading correctly.