Has something changed about save to file locations in recent patches? I try to do a save file at the end of a day when I'm playing/testing, and none of the saves I've made in the past month or so are in the folder I set up for FoE saves. I can see a few older ones from Jan, Feb, and early March, but nothing since, and I've even done the Load Game and them turned around and saved to file and they're not there. I did a search on filename for my entire hard drive and they're not being found.
FYI, I use Pale Moon browser, which is quite similar to Firefox, but open source and a bit less heavy-handed imo. It's base is generally the same, so most add-ons, and options and such are the same.