Hi Daniel,
Your method DID indeed fix the corrupted files. Thanks for this!!!
We have a bank of Macbook pros 2012 all running sierra 10.12.2. These were the original machines we were running Dorico om. We’ve recently bought some Mac minis which are running the exact same software. They are all cloned, so should be the same software wise. The only difference in this case was that the full soundpacks were not installed on the Mac minis at the time.
The students save their projects to a shared folder that everyone has access too. They also open directly from this area too, so they weren’t copied to anywhere externally. They connecting to a Windows server 2012 R2 share on NTFS via cifs://
I will try opening and saving some other projects to see if I can emulate the problem…