Printing to PDF returns blank PDF

When printing to a PDF. I am only getting a blank PDF.
No matter what driver I use (Rhino or Adobe)

Here is the sysinfo data:

Rhino 7 SR4 2021-3-19 (Rhino 7, 7.4.21078.01001, Git hash:master @ a432d22ab7f0f7b53d157d578278070c8bf6eff4)
License type: Commercial, build 2021-03-19
License details: Cloud Zoo

Windows 10.0.19041 SR0.0 or greater (Physical RAM: 64Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro RTX 4000 (NVidia) Memory: 8GB, Driver date: 3-10-2021 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 461.92
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0
- Secondary monitor attached to adapter port #1

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 3-10-2021
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 8 GB

Rhino plugins that do not ship with Rhino
C:\Users\mail\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\Lumion LiveSync for Rhino (839d6175-32d1-4ffe-a0a4-b7fb43cf0ff5)\2019.11.5.949\Lumion\Rhino 6.0\LumionPlugin.rhp “Lumion LiveSync for Rhino”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\WebBrowser.rhp “WebBrowser”
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoScript.rhp “RhinoScript”
C:\Program Files\Rhino 7\Plug-ins\RhinoBonusTools.rhp “Rhino Bonus Tools”
C:\Program Files\Rhino 7\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\Alerter.rhp “Alerter”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\export_PDF.rhp “PDF Export” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.4.21078.1001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”

Does this happen with even simple files like a rectangle or with a specific file? If this is file specific, can you send me the file so I can see if I can repeat the issue on my computer?

Thank you Steve for the quick response.
I created a new doc with a simple rectangle.
Setup for printing and it has the same effect. The print preview is an empty grey box.

Here is a link to a screen shot of the print dialog with the viewport in the background.

Try disabling the Lumion plug in in Rhino’s pluginmanager and then restart Rhino. I would be curious to know if you get the sane results with your rectangle test.

Disabled and restarted.
It did not fix the issue.

I am going to go in and disable as many as I can to see if I can get a result.

That didn’t work either.
I read through a google search that someone had a similar issue with R5 back in 2015.
The solution was going into the registry and deleting a default print setup key.
I looked through the registry to see if I could find a similar key for R7 but could not.

What is your scale set to on the print dialog? Try scale to fit if it isn’t set

I have attempted scale to fit and 1:1.
I have also attempted different sheet sizes.

After some more banging of keys I have narrowed down the issue.
I am now getting results from printing all the viewports except the custom viewports I have setup.

One mistake I made was checking all the toggles in the visibility pulldown in the print dialog.
One of those options was ‘show only selected’ (slapping my forehead.)

On the custom pages / viewports I setup I can get the text labels to show, but not the model.
Here is a LINK to the model to see if the same issue happens on your end. At this point I am pretty sure its an option that I am missing, but I have been looking at it too long and sure I am looking over the obvious.

Thank you for taking the time to look at this!!!

I am also finding I can print any of the standard views. I cannot print the tabs that I have setup for 24"x36" sheets with several viewports in each.
I have been creating individual elevation views and merging them in photoshop.