Brian, I am so grateful for your input. I do however, have to embarrassingly confess that the problem was "user error". As per your suggestion I tried the standalone version - keyswitches worked fi...
Update: I uninstalled the Aria Player and GPO5 samples, downloaded again and reinstalled - Still the same problem! I have noticed that some of the other instruments also have the keyswitch problems...
After experimenting some more, and following Brian's pointers, I've come to the conclusion that all my KS Cello files have a bug. All other KS instruments work as expected. Looking through this for...
Many thanks, Brian, for the very comprehensive reply. It's much appreciated. I should be able to put your pointers and suggestions to the test at the weekend. Thanks again, Steve