I have installed Kontakt 4 (was running Kontakt 5) on my Mac to use with VDL and Sibelius 7. When I open up the mixer and try to ";create"; the sound sets by activating the Kontakt 4 VST file, it shuts Sibelius down every time. Is there an update that I need, which I have not been able to find. Do I need to uninstall Kontakt 5? Thanks for any help you are able to provide.