Hi, 2Torr.
I’m unsure exactly how you’re trying to run this from the QSpice GUI. Please upload the schematic.
You’re a new user so see this post: Qspice Forum - New User to Basic User (File Upload) - QSPICE - Qorvo Tech Forum
Edit: If you want to run a netlist directly, enter the following in a command prompt window:
"c:\program files\qspice\qspice64.exe" test2.cir
Where test2.cir is the netlist. If successful, this will generate test2.qraw which you can double-click in File Explorer to open in the Waveform viewer. If not successful, you’ll get error messages that may help identify the problem.
–robert