Quote: "...in the process of installing every thing back in to poser."

In light of the fact that you have not put everything back in yet, is it poisble that the props are something that you have not put back yet?

The props folder goes under 'libraries':

[Poser Folder]RuntimelibrariesProps

Check that it is there and does indeed contain props. Props will have either a 'pp2' or 'ppz' file extension.