I needed to add an image for the World Percussion 2.0 library. So I did that. And I had to add the library to the page using the Import Content tool (why)?
However, Kontakt 7 still cannot deal with the library name having a '.' in the name. So I renamed from "World Percussion 2.0" to "World Percussion 2_0".
See the image attached. How can I remove the highlighted 2.0 thumbnail?? That library was apparently automatically found by Kontakt, as it is not in my list of "imported content".