Create new family error

Hi

I am following this tutorial to create a new family from within a project.

Everything looks like it is wired up correctly in GH but I am getting an error " 1. Grasshopper: Input parameter index [-1] too low for Component New Family."

What is causing this? I am using Revit 2021 and the latest RIR.

Thanks

I got that error on the previous RiR version, upgraded and placed the newer component and it was all good. Is it an older definition?

1 Like

Yep that was it. Thanks