Why do some instruments in Komplete Kontrol not produce sound?!

Hello Everyone,

thank you in advance for reading the post, this issue is driving me mad so any help would be such a relief! I am on a Windows 10 PC,M32 Keyboard, all working perfectly until recently.

In Komplete Kontrol, when used as either stand alone or as a plugin in FL Studio, some instruments work perfectly fine, with sound, auto assigned knobs, sound from keys etc but other instruments give me no sound at all.

For example I can load up prism, monark, reaktor and get sound, perfect midi control, the lot.

But although I can load and preview instruments like mallet flux or india or ethereal earth, when they load up I cant get any sounds, even though its obvious my keys are triggering midi!

The audio and midi preferences are fine, as I say some instruments work.

I have reinstalled eveything, but it seems to have gone strange since a recent Komplete Kontrol Update.

Everything works great in Kontakt Player.

Also, I get a "Loading Issue, could not load plugnin" for the recently installed Hypha, dont know if this is relevant?

Thank you again in advance and wishing you all health and the best for the new year