@stevebaer I am using https://www.rhino3d.com/download/rhino/5.0/rhinoscriptcompiler to compile my V6 scripts. I have changed the SDK path - see image
However, @nathanletwory has informed me that he is getting an error when running my plug-in - see image
This is trying to run it in 6.1.18023.13161
I’ll need to get a copy of the plug-in to try and reproduce the problem.
That said, unless you are using new V6 functions or only want your plug-in to run in V6 you shouldn’t have to change the SDK path for RhinoCommon. V5 plug-ins that are compiled by the script compiler should run in V6.