I'm not sure if I'm importing the runtime source correctly, I end up getting compile errors. None of the editor scripts can reference the runtime since it's in the assembly definition that's included in the package.
How I import the runtime source
1. Import Behavior Designer 1.6.1 from Asset...
If your Behavior Designer folder lies within an assembly definition you've created, you'll be unable to create any external behaviors. To fix this Behavior Designer has to be setup properly with its own assembly definitions, which it is not when using 1.6.1 from the asset store. I have...