Failed to cast GH_Element to GH_Element with c#

Grasshopper Karamba3D
1

Hi,

I tried the method here to access the Karamba.GHopper namespace. It works and now I can use the Karamba.GHopper namespace in visual studio! But now a new problem arises, I get the failed to cast GH_Element to GH_element error.

I’ve unhook the Memory load *.GHA asemblies using COFF byte arrays in Grasshopper Developer settings, and reopen rhino. Now my grasshopper component just disappears. Is there a way for me to solve this? Thank you in advance.

Tommy

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2

[Update]

Not sure if this is the official way to do it, but after setting Copy Local back to default true and changing the RegisterOutputParams back to pManager.AddGenericParameter(“”, “”, “”, GH_ParamAccess.list); it works.

3

Do you reference karamba3D version 2.2.0.18 on purpose? Could it be that you have an old version of Karamba3D installed and try to compile your plug-in with a later version?
– Clemens

4

The company that I work in decide to stick to version 2 due to some updates in v3 api. I have 2.2.0.180 in grasshopper and 2.2.0.144 in visual studio installed.