After installing the VST Session Guitarist - Electric Sunburst Deluxe and Session Guitarist - Picked Acoustic, Kontakt 8 shows that the sound libraries are installed, but the sounds from these two libraries won't work. After opening VST Session Guitarist - Electric Sunburst Deluxe or Session Guitarist - Picked Acoustic, Kontakt sometimes displays the message "1 file could not be found" and sometimes states that my version of Kontakt is old and that I should update it to version 8.4. Unfortunately, after opening Natice Access, I can't update Kontakt 8. The same thing happens when I open these two sound libraries in Cubase.The other libraries work fine. Please help.