Haven't been there (LiveDB) for a while now (I find this thing not very ermm "user friendly" and very well unorganized ... has nothing to do with the plug in of course)
But yes, just tested it in Poser and it's the same for me, too.
The selected material does not show the corresponding thumbnail.
And what is that, at the "Attic" path? All in says in there is "node graph" on all material, is this by intention?
Otoy really needs to overhaul this whole thing