When you freshly reinstall Path Finder and customize your preferences the way you like them, is there any method for saving its preferences stack somewhere else as a known good backup? When I say "preferences stack", I'm thinking that there is the preferences plist in ~/Library/Preferences, but there might be an entry in ~/Library/Group Containers or ~/Library/Saved Application State, among other places...
You'd have to ask the Path Finder forums for guidance, I'd guess, for a complete answer.
I've not had good luck with the forums. I'd have to figure out which preference files are corrupted by some Path Finder bug and which files are reliably preserved to reinstate my preferences. Or, I can just stop customizing Path Finder so that I can have more time to eat pizza. Fighting Path Finder is a time sink.