I ran into this issue just months ago and ended up buying a new computer because I got no help from Native Instruments' Customer Service. I opened Maschine 3 as normal today and all of my instruments have completely vanished. Both Maschine 3 and Native Access are the most up to date versions on my MacOS running Sequoia 15.3.2. Does anyone have a solution to this? All of the instruments have been rescanned multiple times.