Hello, I am having the same symptoms of this topic ([solved] Can't open 'Pcbnew' or 'PCB footprint editor'. KiCad immediately closes), though everything worked just fine up until yesterday. I’m in the middle of a project and the timing is horrible!
I have tried reinstalling 4.0.2 from the download to no avail.
The only thing that has changed is that I installed Anaconda – an Python distribution with other tools.
Any way to troubleshoot this?
thanks!