"Strangely using a python loader such as by Dimension3D or ockham seems to load faster and with less incidence of missing files than loading from the library pallet."

But then you have the problem that you cannot UNDO a loaded item, meaning you have to delete every part manually. And if you load a pose for a figure you cannot undo that either. So the Dimension3D is creating a new problem.

The problem of bad written scripts will still exit with the Poser files. You have to change them to correct paths, always beginning with Runtime as in Runtime:Geometries:etc or Runtime:Textures:etc

There is a program called CR PRO that corrects wrong paths for everything you have in your runtime automatically. Very helpful.

By the way, if you use another 3D program like Vue it will also ask for geometries or textures if the paths in the scripts for the Poser files are incorrect. The same for DAZ Studio.