Looks like an issue with the copy/paste.
This version of the DYN should be easier to ‘just test’:
New Profile Family From Curves - Share Out.dyn (34.0 KB)
Note that it includes a ‘close all the documents you can’ bit of Python in the purple group. Be VERY careful with this as it will do so without saving (by design because the error message which can be produced by the python will prevent saving). Close everything you care about when running this (including other Revit instances - better safe than sorry).