Bongo will not load in V7 - just purchased

Bongo 2.0 will not load in V7 or V8. It loads in V6.

I just purchased Bongo, downloaded it and installed.

Started Rhino V7 and it automatically tried to load Bongo. Message appeared that Bongo could not be loaded due to no license. Then another window appeared to add the license. Successfully added the license to my Cloud Zoo. Closed V7.

Started V7. No Bongo. Tried to install it without success.

Gave up on V7.

Started V6 and Bongo was automatically installed.

Restarted system.

Started V7. Still not able to load Bongo.

Started V8. Unable to load Bongo.



Hi David,

Within Rhino 7 and Rhino 8, Bongo 2 and 3 are mutually exclusive - you can only run one of them. You can install both, then you have to use a switching tool in the Bongo 3 program library to decide which you want to run.

You have to run the command as a System Administrator. It then pops up a Window where you can choose to adjust the settings for R7 or the WIP (they can be set to different versions of Bongo) and the Bongo choice for that Rhino release.

After you change the settings you need to restart Rhino.

The CBongo.DLL error message relates to Bongo 3, not Bongo 2 and occurs when Rhino is set to use Bongo 2 because the switching process doesn’t turn off one of the B3 plugin elements. You can ignore it while running B2, or you can manually disable the plugin.

Just remember to re-enable it before switching to B3.

When you first run Rhino with B2 installed it may not show its splash screen on startup and clicking About Bongo may show a command not found error. You should be able to kick it into life by turning on and off the Timeline from the Bongo menu, after which it will start up normally until you swap versions again.

Afraid I can’t help with the other error messages you’ve posted. Sorry.

Good luck with your Bongo experiment. There’s quite a steep learning curve so follow whatever online resources you can. B2 and B3 are quite different…


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Bongo 2 doesn’t always show up in Rhino 7. Try doing this:

But in order to make that work you need to make sure the Bongo version switch is set to Bongo 2, like in Jeremy’s comment:

@jeremy5 @marika_almgren The fundamental problem is I cannot install Bongo 2.0 into Rhino V7 or Rhino V8. It has nothing to do with switching between Bongo 2 and Bongo 3 because Bongo 2 cannot be installed.

You’ve installed it in R6, I think. The link Marika published basically says run _MigratePlugins in R7 to get it to show up in R7 as well. But you do need to check the switching tool first because you’ve installed B3 and that will prevent B2 until you set the switch to B2.

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I installed Bongo 2 in Rhino 6 after being unable to install Bongo 2 in Rhino 7.

I appreciate Jeremy’s and Marika’s attempts to assist. Unfortunately I may have provided too much information which is causing confusion.

Hi David -

I can’t tell from that answer if you have tried the MigratePlugins command?

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The problem appears to have originated when I attempted to install Bongo 2 into Rhino 7 immediately after downloading and installing Bongo 2 on the disk. A message appeared that installation was blocked due to lack of license, and another window opened to add the license. I added the Bongo license to the Cloud Zoo. Bongo 2 would not install into Rhino 7, but subsequently did install into Rhino 6. This was before I downloaded Bongo 3.

Therefore the problem is not related to Bongo 3, or Bongo 2 installed in Rhino 6.

Added: There appears to be something actively blocking installing Bongo 2 in Rhino 7.

Can you please send me your Bongo System report file?
If you have Bongo 3 WIP still installed on your machine please go to:
C:\Program Files\Bongo 3.0 (64-bit)
If you only have Bongo 2, please go to:
C:\Program Files\Bongo 2.0 (64-bit)
Right-click on the Bongo System Reporter file (BongoSystemReport.exe) and choose Run as administrator.

Save the file and send it to me (
It should tell us what’s going wrong.

Out of interest, what do you mean by “installing” in this context? Are you perhaps referring to running the .msi installation file and not getting an install option, just repair and remove? Or something else?

No problem running the .msi file and having the folder with files created.

The problem occurs when I click on the Install button in PlugInManager and select the .rhp file in the folder created by the .msi file, or when I drag the .rhp file to Rhino.

Thanks David, I can repeat the problem in R7 and get the error message from your first post. Happily I can then fix the problem.

On my system the problem is caused by having R7 set to use Bongo 3 before trying to (re)install the Bongo 2 RUIs. If I then use the switcher, as detailed in earlier posts, to change the R7 association to Bongo 2 and restart Rhino I can then (re)install the Bongo 2 RUIs successfully via the Plugin Manager. This behaviour is repeatable.


The problem initially occurred before Bongo 3 was downloaded and installed. I set a file to Marika as requested above and am waiting to hear from her.

David, I’ll happily leave you to wait for the expert. But if you later installed Bongo 3, and I believe you imply that you have, it will have made itself the default choice and you will still have to run the switcher before you can use/repair/reinstall Bongo 2.

Note that B2 is unaware of the switcher (and B3 probably is too) so it can’t of itself address that aspect of your problem.

Good luck! I hope you get it sorted soon.


We had a look at your Report file and it looks like you have Bongo 3 as the current version for Rhino 7. That’s why Bongo 2 won’t load.
Can you please go and run the Bongo version switcher so it set to run Bongo 2.0 for Rhino 7. Instructions to it is in this thread.
This will hopefully correct the registry and fixed the fact that you now have Bongo 2 and the Bongo 3 UI running in your Rhino 7.

Problem solved using the Bongo version switcher. Thanks.


Dear all at McNeel,

I have tried to run the switch tool for R7 as Admin, but no change. Bongo won’t load.
The migrate command won’t show any window with choices, instead it says “no plugins found to migrate from previous rhino version”

Please find the system information below the text from the command window.
The following message appears on the command line in Chinese I guess:
Loading V-Ray for Rhino, version 6.00.01 ( Nov 3 2022 )
Error occurred loading plug-in
Die DLL “CBongo.dll”: Das angegebene Modul wurde nicht gefunden. (Ausnahme von HRESULT: 0x8007007E) kann nicht geladen werden.


bei NativeMethods.SetOnRenderAnimationWillStart(RenderAnimationNotificationEventsCallback Callback)
bei BongoNET.BongoEventWatcher.add_OnRenderAnimationWillStart(EventHandler`1 value)
bei BongoEtoUI.BongoConnectionsConduit…ctor()
bei BongoEtoUI.BongoConnectionsPicker…ctor()
bei BongoEtoUI.BongoEtoUIPlugIn.OnLoad(String& errorMessage)
bei Rhino.PlugIns.PlugIn.InternalOnLoad(Int32 pluginSerialNumber)

Blocking plug-in Veesus Point Clouds for Rhino.
Command: _CommandHistory

System information:
Rhino 7 SR29 2023-4-17 (Rhino 7, 7.29.23107.03001, Git hash:master @ 5f05ef3a2eea3d910c4c2fb79ccc75b413d33ca7)
License type: Kommerziell, build 2023-04-17
License details: Cloud Zoo

Windows 10 (10.0.19044 SR0.0) or greater (Physical RAM: 80Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: AMD Radeon RX 6800 (AMD) Memory: 16GB, Driver date: 5-23-2023 (M-D-Y). OpenGL Ver: 4.6.0 Compatibility Profile Context
> Accelerated graphics device with 7 adapter port(s)
- Windows Main Display attached to adapter port #0

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: ATI Technologies Inc.
Render version: 4.6
Shading Language: 4.60
Driver Date: 5-23-2023
Driver Version: 31.0.14057.5006
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24 bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 57032 MB

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\andre\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\Bullant\\bullant.rhp “bullant”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.29.23107.3001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.29.23107.3001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.29.23107.3001
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” 7.29.23107.3001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.29.23107.3001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
C:\Users\andre\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SectionTools\2021.4.30.511\SectionTools.rhp “SectionTools”
C:\Users\andre\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”

Please download the latest Bongo 3 WIP from here: Rhino - Download - Bongo for Windows WIP The version you have installed has expired.

That worked fine, thanks.
Could you integrate a notifier in Bongo to download the new version when the old version is going to expire?