The save/load function is a bit meh, at the moment. The editor will make a new dir each time you run it and save files there…but not a ptf.
I don’t like the ptf format much… it’s just a python script loaded with exec(). I don’t think any ‘asset’ (be it a 3d model, image, sound or particle effect) should run arbitrary code.
Imagine someone making an mod for your game that will delete all files in your home directory every time a spell using a ptf is cast. Not a good idea.