NCF – Extended list of Neutral creatures.

The generator definitely doesn't work there, and I don't know what's wrong with the editor. Maybe you have some mods installed that add new objects to the map editor?

Well, if the generator doesn't work, then the need for the mod disappears.
As for the editor, I don't know if there are any mods that add new objects, except maybe there are mods that replace the models of manticores and griffins.
I'm having a problem with some mods in the .pak format, for example, the one for the doll in the inventory.