Another possibility - you did run the snarlygribbly addon one time, and it prepared its data. You then made that scene your "default" empty scene and you've been reloading it every day for years, and every scene you create starts with that addon data already loaded. No need for any script to be executed anymore.

Poser offered this new ability to incorporate automatically attached info into a scene quite a while back. 

---

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)