Parakeet causing Grasshopper breakpoint after most recent Rhino 8 update

Grasshopper
,
1

I get this popup whenever I start Grasshopper. Presumably uninstalling Parakeet would stop this, but I would like to continue to use it.

Screenshot 2026-06-17 at 20.29.57
Screenshot 2026-06-17 at 20.29.571920×1063 398 KB

Cheers,

Bob

2

I’ve the same issue.
Anyone from @Parakeet3d ?

3

Hi, we haven’t changed anything. Not sure what’s going on. We are currently looking into it and will probably have an update within the next few days.

4

What I can say so far is

The failure happens because the same Parakeet.ghpy is being found in more than one place during Grasshopper startup.

Grasshopper loads .ghpy files from both:

  1. %APPDATA%\Grasshopper\Libraries\ (shared across Rhino 7 and 8)
  2. %APPDATA%\McNeel\Rhinoceros\packages\8.0\ (Yak / Package Manager)

Users who installed Parakeet the old way (Food4Rhino, manual copy into Libraries) and later installed via Package Manager often end up with two copies of Parakeet.ghpy. Rhino 7-only users may never hit this; clean Rhino 8 installs often work fine.

-

  1. Close Rhino completely.
  2. Search for all Parakeet.ghpy files in:
    • %APPDATA%\Grasshopper\Libraries\
    • %APPDATA%\McNeel\Rhinoceros\packages\7.0\
    • %APPDATA%\McNeel\Rhinoceros\packages\8.0\
  3. Keep only one copy — ideally the Yak version: ...\packages\8.0\Parakeet\1.1.0\Parakeet.ghpy
  4. Delete any duplicate in Grasshopper\Libraries or older package versions (e.g. 1.0.0 alongside 1.1.0).
  5. Restart Rhino and run _GrasshopperLoadOneByOne to confirm Parakeet.ghpy is offered once.
5

To me this started when I opened Grasshopper 1 in Rhino Wip9,
Could it be this the source, maybe there’s a duplicated reference?

6

Thank you for looking into this.

I have failed to find another copy of Parakeet.ghpy. I am on a Mac, and the ‘locate’ command skips the Library directory, but ‘find’ also does not pick up a second copy.

Using the Package Manager to uninstall Parakeet gets rid of the error message, but also gets rid of the Parakeet menu entry in the Grasshopper bar, so if there is a second copy out there somewhere, it is not loaded properly.

Reinstalling Parakeet recovers the error message. Parakeet appears to be working.

I conclude that Parakeet is clashing with something other than itself, but I am out of my depth here.

Bob

7

windows machine, rhino8 doesn’t like having both assembly and GHPY versions of parakeeet; (assembly already loaded); deleting the ghpy solved error message.

Other than this minor issue, great package Mr. Khameneh.

8

Update: The issue has been resolved. You can now install Parakeet version 1.2.0 directly via the Rhino Package Manager or download it from food4rhino.com

9

Works for me! Many thanks!

Bob