Yes there is a solution if libraries has gone in P10 , due adobe flash stopage. I have W10/pc and Poser10. Solution: Exit Poser if it's running.

Find your poser.ini - the path may differ for you - mine is in

c:/Users/++user name++/AppData/Roaming/Poser/10

In your poser.ini look for

LIBRARY_EMBEDDED_TYPE 0

and change the 0 to a 1.

-Save the poser.ini file. -Relaunch Poser 10. Your libraries will come back again. A little bit different in view, but they are back!