Quote - Update:  OK it's not actually locking, it just takes a very, very long time for the library to open, then for the file to load into Poser.  So anyone know how to resolve that issue?

What is probably happening (as your not getting an error message) is that Poser is having to search for a file (or more likely multiple files), which can take a long time.

Are you using external Runtimes ?