All,
We believe we have root-caused this issue. It appears to be related to Win 10 systems where the Microsoft Print to PDF driver is set to the default.
If you’ve encountered this issue, could you see if your default printer is the Microsoft PDF driver?
In Win 10, you can find this in Settings > Devices > Printers & scanners.
First, un-check Let Windows manage my default printer.
When that is un-checked, the default printer will be displayed.
We have found that changing the default printer to a different one fixes the empty print dialog box. You can change the default printer by clicking next to another device, and selecting Manage.
Then click on Set as default, and close the window.
Relaunch SketchUp, select File > Print, and you should see the correct values.