hi antari
I just had more or less the same problem, I tried printing a 3.00m x 3.00m directly from my layout book but also ended up with a blank PDF.
I then tried saving the PDF directly from the Layout Book and it worked!
So select your Layout in the Layout Book, go to File > Save As and select your save options.
Hope this helps
Andre Steynberg
Win 10 64-bit
AC27