Dorico window disappears when I try to save PDF in Print Mode

Daniel, I got it to work! I do apologize for not noting exactly what I did. I am a kind of Technosaurus if you will. (Started using the EiES system back in the 70s at the New Jersey Institute of Technology… )
Dorico is wondrous! Thank you for all you and your colleagues do and have done to give us this tool.