Ladybug Tools freezing when placing components in Grasshopper (only Ironbug works)

Hi everyone,

I’m having serious issues trying to install and use Ladybug Tools for Grasshopper.

The main problem is that as soon as I place any Ladybug, Honeybee, or Dragonfly component, Rhino freezes and immediately closes.
However, Ironbug works perfectly fine — it’s the only tab that loads and runs without problems.

A few details that might help:

  • I’m using Rhino 8 on Windows 11.
  • I don’t have any antivirus software running.
  • I tried on another older computer (Windows 10) with the same installer, and it works perfectly there.
  • I installed both manually and via Pollination, with the same result.
  • All Python modules (ladybug, honeybee, lbt-recipes, etc.) work fine when tested from PowerShell.
  • Still, when I open Grasshopper and drag a Ladybug component, Rhino crashes instantly.

At this point, I’m not just trying to fix it — I want to understand what’s actually causing this.
Could it be a Rhino 8 compatibility issue, a Python path problem, or something related to .NET or permissions?

Any help or debugging suggestions would be deeply appreciated.

Thanks a lot,

Check here:

It might be related to the outdated graphic card’s drive or other plugins.

Thank you for the answer - I don’t have the plugins in my list.