I have encountered a thing when I installed all the NI libraries on external drive, it was connected to USB-c port on Thunderbolt dock TS3. After I disconnected the drive and plugged the drive directly to the thunderbolt port on Mac Mini, the libraries did not get recognized, I had to rescan everything and reconnect the library folder. Ableton was crashing until I rescanned all the libraries. Does it really matter where you connect your SSD external drive? Why would this be happening? I want to know why, so I don't come across this issue again. It happened same with NI, UVI and Arturia libraries. Anybody knows why?