As of last friday, the nightly packages have ngspice built with debugging. I can try to debug this today, but are there step by step instructions on how to trigger the crash? (Although I use KiCad and package it for macOS, I do not even know where to start with ngspice and kicad.) Thanks folks! We'll get it! On Tue, Sep 17, 2019 at 7:35 AM Jeff Young