I’ve recently encountered a serious issue when using RhinoInside.Revit.
Whenever I open a Revit file and then launch Rhino (even without opening Grasshopper), Revit completely freezes the moment I try to delete or modify any elements connected to ductwork. The entire application becomes unresponsive and can only be closed forcibly.The issue only occurs with duct-related categories; other MEP categories are unaffected.
I tested this extensively with:
Multiple versions of Rhino 8 (all minor versions)
Multiple versions of RhinoInside.Revit
Multiple versions of Revit (including 2020)
The problem appears consistently across all combinations.
Interestingly, this issue does not occur when using Rhino 7 with RhinoInside.Revit — only Rhino 8 triggers the freeze. This makes me suspect the root cause may be related to some internal changes between Rhino 7 and Rhino 8.
Any insights, suggestions, or discussions from experts in this area would be greatly appreciated.
Thanks in advance!
Hi Jimmy, this sounds like a plugin conflict. There are different troubleshooting methods depending on what version of Revit you are running. In 2025+ there is a plugin manager. In previous version you can use this addin.
I disabled all other add-ins and tested with only RhinoInside.Revit loaded, but the issue still occurs.
However, when using Rhino 7, the problem does not appear even with all plugins enabled.
It seems this is not caused by any third-party add-ins.
I’ve attached a simple Revit 2020 file for you to test whenever you have time.
I’ve tested this in Revit 2020, 2022, and 2024, and the behavior is the same in all versions.
Also, this issue occurs even when Grasshopper hasn’t been opened at all — simply launching Rhino 8 is enough to trigger the problem.
If I don’t start Rhino 8, everything works normally.
It’s not an issue caused by doing anything inside Grasshopper — the freeze happens when I manually delete or modify elements directly inside Revit.
I also just tested this in Revit 2023, and the same problem occurs there as well.
Windows 11 (10.0.26100 SR0.0) or greater (Physical RAM: 64GB)
.NET 7.0.0
Computer platform: DESKTOP
Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 3080 Ti (NVidia) Memory: 12GB, Driver date: 8-14-2024 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 560.94
Accelerated graphics device with 4 adapter port(s)
Secondary monitor attached to adapter port #0
Windows Main Display attached to adapter port #1
OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
GPU Tessellation is: 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: 8-14-2024
Driver Version: 32.0.15.6094
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 12 GB
I tried launching Revit with all GH plugins removed, but the problem persists. Everything only works normally when I switch back to Rhino 7.
However, I really need to use Rhino 8 because I rely on the GHPlayer window persistence feature.
Have you been able to reproduce the issue where air ducts can’t be deleted on your end yet? Or do you think there might be other possible causes for this?
Everything looks fine in your file in various versions. Seeing that Rhino 7 works fine, it does look like a Rhino 8 plugin of some sort that is using .netcore, which wouldn’t be compatible with Revit 2024 & below. Have you tried Revit 2025 or above?
I tested it again using Rhino 7. Even with GH loaded without any plugins and just opening the GH interface without doing anything on the canvas, the issue still occurs.
Deleting all duct elements at once works, but deleting just a single segment causes Revit to freeze.
If I load Rhino 7 without opening the GH interface, no this problem.
I tested it this way, but the issue is still the same.
There’s a new finding though: if I open Revit and draw a duct first, then any delete or edit operations won’t freeze Revit anymore.
I’ve tested this on five desktops and two laptops used by different people.
Below are the version details installed on my current laptop.
Any progress on the issue above? RiR is essential to our team—using Rhino as a backend for geometric calculations is incredibly powerful. It enables us to run custom analysis (clearance, clashes, etc.) that AI simply can’t handle yet.
