Timothy,

Instead of reporting an issue I would like to offer you help. I am by no means an expert in Grasshopper Kernel, Rhino Common or Revit API, but I have been using your tool for a while now and I love it. I want to help keep the development going forward. I prefer writing in Python so I am not sure how that fits with your C# set up but let me know if there is anything that I can do to make Lyrebird better.