I can't generate stems I got a message :
Stem version could not be created for:/volumes/apple ssd/users/thierry francois
Be sure that you are using latest version of Native Access for your OS
ALL NI apps including NTKDaemon must have full disk access. : How to Enable Full Disk Access on macOS
Disks must be of correct format (APFS) : Notes on Network Drives and Disk Formats
Also then do not use Clean My Mac.
And quote Kymeia : if using Sequoia then N.I. apps must be added to the Local Network
