Crashing when adding Kontakt instance

Dorico 4.0.31. Kontakt 6.7…1. WIndows 10. Adding multiple instances of Kontakt crashes Dorico, and the corrupts Kontakt so that it wont open standalone. I got a second isntance - the crash. Fixed Kontakt. Then a third instance - crash again.

If I follow the instructions from NI I can ressurect Kontakt, but then the Dorico crash corrupts it again.

I am using the four ISS string instruments from Embertone in Kontakt, new for me.

What to do?

Hi @Andro, first I need a diagnostics report. I need to see the contained crash dumps before I can say something more. So please do Help > Create Diagnostics Report and post the corresponding zip file here. Thanks