Adventure Path Encounter Library loading empty

[Kohilo]

Hey folks, long time GM here. Been using Hero Lab as a player and GM for well over a decade. Own almost all the packages. The Adventure Path packages for 1e were a big time saver, but lately I have some sort of issue that keeps them from working.

I’ll open the Encounter Library (not the builder) and click to import an encounter in an official AP I own - like say Return of the Runelords today. And some of the creatures just don’t load. This is an issue with creatures, not NPCs. So an NPC with class levels will load but a creature out of a bestiary just comes in with 10 HP and empty content.

What’s changed? How can I fix this?