OSStatus error -108 in Logic Pro 11 after upgrading to MacOS 15.4

I tried changing the permissions of the internal drive to the backup drive, but it didn't help.

BUT, I moved the Logic Projects folder out of the /Music folder it resided in, put in on the Desktop and then opened a Project.

Everything works when the folder sits on the Desktop. I then moved it to the Documents folder. Everything works fine from that location, too.

I'm restoring a previous Music folder from a TM backup while keeping the original. I'll see if iLogic works from the restored folder.

If not, I guess I have to keep the Logic Projects folder in perhaps the Documents folder ongoing?

Save a Copy didn't fix the problem, nor did Clean Up. When I tried to Consolidate the Project, it wouldn't work. I kept getting the -108 error message.

Can you give me more info on how to import all of the assets into a new project. When I click on the Logic project file to import, all it does is list assets in the Browser. I can't drag the assets into the tracks.

Also, everything is normal for my projects when I open them directly from their backups on the external drive (3.1 TB space). When I open them from the Macintosh HD where they were first saved, I get the -108 message and the missing files pop up window.

Thanks.

Okay, I imported a Logic Project that resides in my Logic folder on the Macintosh HD into a new session. The files imported, but I got all of same missing file dialog boxes and the OSStatus -108 error dialog boxes.

Then, I imported the VERY SAME Logic Project from the backup that resides on my external drive. It worked PERFECTLY. No OSStatus-108 warning and no missing file dialog boxes.

Could it be that the Logic folder on my internal hard drive that holds all the Projects got corrupted somehow when I did a Time Machine restore few days ago? And if so, is there anything I could try?

The only difference I can see between the two folders is that they have different permissions for "staff" and that the backup has a few GBs less due to the test projects I haven't backed up.

I put the Logic Projects folder from the Macintosh HD into the trash. I then copied the Logic Projects folder from the backup HD drive (the projects open from this folder without any issues) to the internal Macintosh HD.

The same issues with OSStatus -108 and missing file dialog boxes occurred when I opened Project files from the copied backup folder.

I don't understand how they can open without issue from the external drive, but that same folder when copied to the internal drive presents the same issues again.

I was able to open up Project files from the TM restored /Music folder (duplicate copy), and everything works perfectly.

The TM replacement /Music folder doesn't have the musical notes on it. So I may have to do an actual "Replace folder" with my TM backup as I believe this a system folder.

Let me know if that sounds right. Thanks.

So, I replaced the entire system folder /Music where my Logic projects folder resides with a backup from TM (3/25) which I believe was before 15.4 was released. The Logic projects in that TM replacement folder displayed the same problems (same missing files and the OSStatus-108 pop-up).

If I keep the Logic projects folder out of the /Music folder, everything works properly.

That will be my solution going forward. I have no idea what is happening with that system /Music folder and Logic in MacOS 15.4.

I have 1.53 TB free on the internal drive and 3.1 TB free on the external drive.

This is the path to the original files: Macintosh HD>Users>****>Music>Logic

This worked in every iteration of MacOS until I upgraded to MacOS 15.4.

[Edited by Moderator]

Thanks, yoyoBen!

It has not been happening with brand new sessions. I'm going to try to import a Project into a New Session again and will let you know how Logic responds.

Thanks.