Trying to instantiate a DataTree in the Python component on Mac produces a cryptic error:
tree = DataTree[object]() Runtime error (MissingMemberException): 'type' object has no attribute '__index__'
The exact same code works in the Windows R5 version of Grasshopper and ghPython, and in the equivalent C# version on both platforms.
I’ve uploaded a test gh definition which constructs a tree with 2 items:
datatree_test.gh (4.5 KB)