Hmm, Skipychic.. Poser won't create a new Runtime folder for you... you have to link to one that you have created. I'm not sure if that is misunderstanding your post or not...

I just checked this and it works on my P7SR3... create a new folder for what you want the library to be called (I just called it "test library"), then within that create a new "Runtime" folder. Then go into Poser, Add Library, and open the new Runtime folder. Will that work?

You can also create those new folders from within the Add Library dialogue, but they do have to be there before you can click Open.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)