Scrivener files less than two years old will not open

Scrivener Scrivener for macOS
1

I last used Scrivener a week ago. I opened it up tonight and no project within the last 22 months will open. Only one or two very old projects will open. I am running version 3.3.6 on MacOS Ventura 13.5. I do not use Dropbox.

When I try to open a project, either by double-clicking on it, or by choosing it from Scrivener’s File > Open menu, nothing happens. Nada. I have restarted my computer. I have deleted Scrivener and re-installed it. I have tried opening backup copies of these files. I can, as I said, open very old projects and initiate new ones, but I cannot open a file I worked on last week or last year.

I have lost months of work. Can anyone help me?

2

When you say nothing, do you mean absolutely nothing, not even an error message?

3

Exactly. No error message, nothing. Not even a Spinning Wheel of Death.

4

What kind of security software are you running, and has it updated recently? That kind of complete failure usually means something is preventing Scrivener from accessing the files at all: if Scrivener tries to open a project and fails, it produces an error message.

If you locate one of the problem projects in Finder, right-click, and choose the option to Show Package Contents, what do you see?