Hi @brad
Great news!
I had version 1.7a of FlexAsio, now I’ve installed the latest 1.10b, and voila!
Kontakt 8.2.1 is working perfectly. I can now open and close Cantabile and it always loads perfectly!
It was clearly some incompatibility between FlexAsio and that version of Kontakt.
Problem solved!!
Thanks so much for your help 