My pleasure. If you've happy with the working (but not ideal) code, then I will try to bundle these into a package for the Renderosity Freestuff. With suitable warnings to users.

The saved filename for the scene seems to be the best option, for storing such useful library information. And in such a way as it cannot then be lost. Such as:

PE_Shoona_with_70s_Rockabilly_Hair_and_BASHIR_EasyPumps_posed_with_Gel004_light.pz3

Could not a script use some of the methods shown above, to pluck out the names of the items in the scene, combine these, and then save the scene with that combined super-name? Though, as you hint, it may be that the in-scene name is not always quite the same as the name used by the Library item.

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