@Stefan Schippers Hi Stefan. I am following your "Analog simulation with xschem and the skywater 130nm Process Development Kit (PDK)" video on youtube. I am having issues loading waves at the end. When I toggle the load waves button I don't see the configuration dialog box or "graphdialog" when I click on the plots. Doesn't seem like the waveforms are being loaded. Any clues on how I can trouble shoot this? Thanks in advance.