Conditionally link the RhinoCommon.dll v5 or v6

Hey Will, thanks for trying. It’s very unfortunate you cannot replicate the bug on your side, as I said the build I sent you contains everything we ship to our customers. In the screen grab below you can see I literally load the same build into the 2 different Rhino versions and, while in v5 I get to use it (it was compiled with RhinoCommon v5), in v6 I cannot. Since you cannot replicate it there I must assume it is something connected to the fact I’m using the trial? It’s the only thing you haven’t tried, or have you?
Anyway, I followed Nathan’s advice and I’ve added some conditional references in my project file, that should do.