Parametric Zoo Forum - Recent Topics

error after installing

lau — Wed, 08 Jul 2026 08:31:18 +0000

in Rhino 8, the following error messages appear at grasshopper startup:

Object: KUKAprc_ToolpathOptimizerComponentV2 (level 1)
{
Exception has been thrown by the target of an invocation.
TargetInvocationException
}

Object: KUKAprc_ToolpathOptimizerComponentV2 (level 2)
{
Method not found: 'Boolean System.IEquatable`1.Equals(KUKAToolPath.GraphPaths.IPathSegment)'.
MissingMethodException
}

Object: KUKAprc_ToolpathOptimizerComponent (level 1)
{
Exception has been thrown by the target of an invocation.
TargetInvocationException
}

Object: KUKAprc_ToolpathOptimizerComponent (level 2)
{
Method not found: 'Boolean System.IEquatable`1.Equals(KUKAToolPath.IGraphPathSegment)'.
MissingMethodException
}

is this a r8 - related error? most r7-plugins work in r8...

the Disassembly component shows an error

chienthang — Fri, 27 Mar 2026 03:33:21 +0000

I have downloaded the latest version of Biber for Rhino 8, but the Disassemble component shows an error saying I need to use a trial version or activate a license. I want to use the trial version—how can I do that? Is there any tutorial available for this?

Screenshot-2026-03-27-103247.png

UNFOLD Command

Cfeldman — Tue, 25 Nov 2025 16:59:57 +0000

The "Unfold" command isn't appearing even after uninstalling the previous version and installing the latest version from Food4Rhino.
I also have OpenNest installed.

Could you explain why I can't see that command so I can follow the tutorial you explain on YouTube?

Always something strange... Help!
Thanks