I just updated computers (new Windows 10 PC), installed Cubase 12 and went to load one of my sessions from my previous system. Weirdly about half the instruments don’t play. When I look at an instrument VST (Kontakt for example) I see the MIDI being triggered and the output meter within Kontakt lighting up. But that output doesn’t reach Cubase for some reason. If I create a new instrument track, I’m able to load and hear the same patch no problem.
MIDI is working. Sound settings match Cubase. Memory isn’t an issue. I tried changing routing settings to see if that did anything, but didn’t.
Here to bump as I am having this exact problem too, verbatim. Loaded up a library in Kontakt, configured all of the outputs correctly, multiple times, across various different projects (a total of 15 outputs). 10 of the instruments play perfectly, the last 5 show signal when using my MIDI controller or Kontakt’s built in keyboard, but produce no sound in either Kontakt or Nuendo/Cubase 12. Any help would be appreciated, or perhaps this is a bug needed to be fixed? Should I revert to an older release and see if the problem persists?