algorithmic modeling for Rhino

Hi Ryan,

I am having some problems getting Prairie Dog to run. I am able to create the slider files but when I connect a file path to the receiver within a GH definition I get the following error:

1. Solution exception:Could not load file or assembly 'Newtonsoft.Json, Version=, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies. The system cannot find the file specified.

I assume it is related to how/where the components and related files were copied to the GH special folders.

Both Newtonsoft.Json.xml and PrairieDog.gha have been copied to the "Libraries" folder of GH.

Are there any other requirements in terms of where the Prairie Dog folder should be located and the app run from?

+1 for additional sliders

+1 for expressions

Thanks for your hard work.


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Can you let me know which version of Rhino (4 or 5? Completely updated?), 64bit or 32bit, and which version of grasshopper are you using? You are the first bug, so lets see how quickly we can get this squashed.



Thanks for your reply.

Rhino 5 SR3 64bit

Grasshopper 0.0.0056

And the Prairie Dog version is the latest one (20130727).

Please let me know if you need any more information.


OK! Fixed! Foolish me, the xml file was the incorrect file, I meant to copy the json dll and grabbed the wrong one by mistake. I have updated the package on food4rhino and it should have the gha and a dll file.

Let me know that this fixes it for you, thanks!

Hi Ryan,

That works fine now.

I will pass on any other feedback when I have a chance.







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