Place Group at Point

Installed the package “Place Group at Point” and it’s not working. I would appreciate any help.

In Input Point(s), “s” veriable is not determined. And some problems with list function? I am not sure…

Dynamo 1.3.0.875 Revit 2017.2

Are you in the custom node environment or the project environment?

The node looks like it should work reading the custom node contents.

It’s custom node environment, just installed and opened it.

Replace “List.Empty” with "DSCore.List.Empty"
same for List.AddItemTofront