Since installing the latest MacOS beta (macOS 12.4 beta (21F5058e)) on my MacBook Air M1 (8GB) I have problems installing additional sounds to Logic Pro 10.7.3. Sound files get downloaded properly, but the Apple Music Apps Content Installer fails to do the installation. I know that the network is working properly and there is plenty of room on the hard disk, and I have rebooted the MacBook en re-started Logic several times.
Here is an image of the installer opening:
Here is the result:
Here is a report that shows that the small file was downloaded properly, but not installed:
I suspect the problem has something to do with the rights for write access to the folder: HD/Library/Application Support/Logic/Sampler Instruments
I'm running the same version of Logic Pro on a Mac Mini M1 (16GB) with MacOS Monterey 12.3.1 on the same network without any problems.