Can anyone open this? It is a new file and suddenly, no open!

I get an error saying the file cant be opened…
Amistad.dorico (223.5 KB)

My other projects open just fine, but not this…

Trying to open it with Dorico 4 gave me this:

Trying to open it with Dorico 3.5 required Dorico 3.5 to be force quit and then it would not launch normally until the computer had been restarted.

No, it’s an entirely corrupt file. What about Dorico’s backup copy (or your own backups)?

Yes, I had to do that. I am confused as to what caused the corruption…but thank you.