I've gone back to using Poser 7 exclusively.  I tried every suggested thing in a bunch of forums here and on other sites, but could never get the library to work at all.  I started using the Semidieu Library Manager and that worked fine for me for a long time.  For the past few months, though, every time I try to use Poser 8 at all, as soon as I start loading things into a scene the system abruptly closes down completely.