User forum issue: "Unsupported project version", after apparent successful recovery. https://forum.audacityteam.org/viewtopic.php?f=46&t=123323&start=10#p447993
This same project recovers fine on my machine but with "Project requires Audacity 0.0.0" [sic].  Anyway, the project has been recovered and sent to the user.
Let me know if you would like a link to the damaged project.
Possibly either one of the following could address the issue:
- Option to -forceVersion "x.x.x"
 
- 32-bit build.