algorithmic modeling for Rhino

karamba - parametric structural analysis

karamba is an interactive structural analysis program at the interface between architecture, design and engineering. It closes the gap between parametric design and statical assessment.


If you would like to test karamba download it from



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Comment by Andrea Trajkovska on February 17, 2013 at 12:33am

Hi I tried everything on this and other threads,

but I'm still getting the PINVOKE error no matter what I do.

I need this for a project really bad and I've already wasted 3 days trying to solve this issue.


Comment by Karamba3D on December 14, 2012 at 3:00am

Hi Aste,

when installing Karamba together with GH for Rhino5 you need to change the installation directory to 'C:\Program Files (x86)\Grasshopper for Rhino 5\'. Did you do that?.



Comment by Karamba3D on November 28, 2012 at 4:02am

Do you use the new Grasshopper version for Rhino5? In that case you need to change the default installation directory when installing Karamba. Did you uninstall any old Karamba before installing the new one? Did you read the related posts?



Comment by Vangel Kukov on November 28, 2012 at 3:42am

each time I open a Karamba example file I get this error on the Assemble component-
Solution exception: The type initializer for 'fem.carambaPINVOKE' threw an exception.

I can't make my own definitions as well because of it.
How can I fix it? Thanks.

Comment by Karamba3D on October 12, 2012 at 12:41pm

Dear Djorde, sorry for the inconvenience. There will be an updated karamba 0.9.84-collection available for download on within the next few days. Currently I can not update the Food4Rhino karamba group due to technical problems.

Best, C.

Comment by djordje on October 11, 2012 at 2:48pm

Yes. Four times until now. I tried using regular windows add/remove tools first two times, then I used an Uninstaller 5 application. Still the same result.

Comment by Robert Vier on October 11, 2012 at 2:38pm

did you uninstall the old version first?

Comment by djordje on October 11, 2012 at 2:36pm

I have just tried the "karamba_0_9_084_TRIAL_GH_08_0066_x86.msi" version too.
Same thing: "Error: Solution exception: Your Karamba license is not valid", just like on image I posted below.
Any thoughts why is this happening?

Comment by djordje on October 11, 2012 at 11:25am

I could not find earlier free versions of karamba for download on other than 1.0.1 FREE. That is why I downloaded it from food4Rhino (the "karambaCOLLECTION 0.9.084" like you said). I installed "karamba_0_9_084_FREE_GH_08_0066_x86.msi" and got the same message as before:

"Error: Solution exception: Your Karamba license is not valid"

Do I need to install "karamba_0_9_084_TRIAL_GH_08_0066_x86.msi" instead?
What is the difference between the FREE and TRIAL one?

Comment by Karamba3D on October 11, 2012 at 8:51am






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