Audacity 3.7.5 on Windows 11 won't open a .aup file created 5 years ago

Audacity 3 Help Forum Windows
3

There is a cousin forum posting with nearly the same problem.

Audacity failed to read from a file in /Users/

There is also a similar posting I didn’t get a title for.

We’re reeeeely close to calling an actual bug.

Koz