Well I'm out of ideas, sorry.
Except amybe a clean re-install, that's move your runtime somewhere safe, Uninstall Poser and manually delete the stuff that's left behind, then re-install and include SR3 and then put your saved runtime in place of the one Poser puts in!
That's my last idea!! [LOL].

Injustice will be avenged.
Cofiwch Dryweryn.