Sorry for the trouble you're having with PixelAfterAll.
Some filter nodes in the app rely on a Process Server at port 8000.
Could you check if you see this running in your system (refer to the attached image)?
In my own Windows environment, I've noticed the server occasionally fails to start. I suspect it might be a port conflict with another application. To fix this, I'm planning to implement a port configuration setting and stop/restart functions in the upcoming version 1.0.4.
