Rhino Plug In Failure - rdk_ui.rhp

Im having random error popups when trying to open multiple files in rhino. These are small files (28k) consisting of curves only. The file not loading is rdk_ui.rhp.

Seems to be a conflict between the DWG file load and the Plugin. Only happens when loading multiple files from Explorer (4 or 5 at a time).

Have been working around this for about 2 years now and thought I’d ask if maybe there is a solution?


In Options > Plug-ins, are all 3 of these plug-ins Enabled and Loaded?

Yes John, they are loaded and enabled.


It must have to do with timing the loading of the plug-ins in each instance of Rhino.
They have a specific order.

1 Like

Thanks for taking a look. Anything workaround I can do for that on my end?

My guess is loading the additional files/instances one at a time will avoid the problem.
If the timers are stretched out to wait longer, then every Rhino instance would take longer to load. Probably not the best option.

Hello - do you mean you are opening multiple sessions of Rhino more or less at the same time?


Yes, that’s what I understood.

Yes, after editing, the files are reviewed in groups. Usually 4 or 5 are selected and “opened in Rhino” from Explorer. Works fine about 50% of the time depending on the file size. It most definitely feels like a “timing” issue when it doesn’t work. Im sure it would be easy to replicate the error as it is very consistent on this end.

One observation that might be of value. I never see the load error at the start of each day (cold reboot). It starts happening after the 2nd+ attempt at opening multiple files (of the day). Memory leak maybe?

I am not seeing any errors so far…


Hello- I would test with Vray blocked in Options > Plug-ins page. (Close and reopen Rhino).
Any different?


Maybe a system difference? I have a coworker with the same system and has the same issue.

Rhino 7 SR17 2022-4-12 (Rhino 7, 7.17.22102.05001, Git hash:master @ 13b57035af8fb22da005ef72c56e4555d9dbcfe3)
License type: Commercial, build 2022-04-12
License details: Cloud Zoo

Windows 10.0.19044 SR0.0 or greater (Physical RAM: 32Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA Quadro P2000 (NVidia) Memory: 5GB, Driver date: 2-10-2022 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 511.79
> 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
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

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: 2-10-2022
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 5 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Chaos Group\V-Ray\V-Ray for Rhinoceros\V7\VRayForRhino.rhp “V-Ray for Rhino”
C:\Users\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\IntelDenoiser\0.6.4\IntelDenoiser.Windows.rhp “IntelDenoiser.Windows”
\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\NVIDIADenoiser\0.4.3\NVIDIADenoiser.Windows.rhp “NVIDIADenoiser.Windows”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.17.22102.5001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.17.22102.5001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.17.22102.5001
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\RhinoCycles.rhp “RhinoCycles” 7.17.22102.5001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.17.22102.5001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”

Thank you Pascal. Did some extensive testing with the Vray plugin blocked and no more issues. Thank you sir!

I spoke to soon. Its now blaming both 3dxrhino.rhp & rdk_ui.rhp