The problem started when I noticed that VEP can't see Kontakt 6 which is a VST. So I went back to VEP7 and asked it to rescan all plugins. What happened after made my jaw drop: almost every VST and VST3 plugins disappeared. So I went back three builds to 3358 and began gradual reinstalling. The whole experiment went as follows:
- Installed afresh build 3358, did the full rescan. Everything was scanned, all passed except one most recent NI plugin,
- Updated to 3388, checked the previous list of Instruments, everything was there. Then did full recan, all was there, finally
- updated to 3440, checked the previous list of instruments, all was there. Then again did a full scand and... ALL VSTs and VST3s (except for 2 plugins) DISAPPEARED!!!
Plus, pluginscan has crashed several times. That definitely is a particular way of making an improvement. To continue work I will reinstall afresh 3388, do the scan, update to 3440 WITHOUT rescanning and wait for better times.
All that happens on Mac Pro 2020, macOS Venture up to date.