import in a nDisplay Root Actor is crashing

import the attached file in a ndisplay root actor and the editor crash

Steps to Reproduce
import the attached file in a ndisplay root actor and the editor crash

Thank Stephane. I confirmed the crash and created an internal Jira (UE-355607) for this. Dragging into the Content Browser to create a new nDisplay config asset seems to work but importing into an existing one is crashing.