Hi Arno! I tried to add a user library but it did not work. What did I wrong: I assume, I have to copy the structure of the generic.xml. I did so, copied the file into a new file and exchanged the GUIDs and Names. If I try to add it, the status bar says "added", but nothing happens and no new objects or libraries are visible in the list. Even not after a quit and restart of the object placer. Please help.