You can also select the library's "load" behaviour manually by selecting a library item, and then either clicking (bottom left) the single checkmark (== replace) or the double checkmark (== add to) - no matter what your basic settings are.

-P-

**P.S.: **_(Just read your last reply) _

If it still doesn't work, then there's obviously something wrong with your Poser install.

Obviously indeed, because it works fine for all others here...