I have a corrupt “Audacity failed to read from a file…” .aup3 file. I’ve read other posts that have had some success and am hopeful that someone (jademan?) here can take a look at it and help me out.
Give us a push. How long is the file or show? Stereo or mono? What were you doing to it? Is this a new production experience for you? Have you done similar jobs a million times before?
Did you do a Mac update between the start of production and now? Has all this work been on one Audacity version? Which one?
2.4.2 and 3.4.2 are the current stable champs. Were you on one of those?
That can be a problem because the latest one is 3.4.2. The last reasonably stable version was 3.3.3. The two in the middle were not paragons of virtue.
When I was in active production, I accidentally avoided all the Project kerfuffles by not understanding or trusting Projects. I exported all my live performances as WAV on the spot.
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There is a Recovery Utility, but it doesn’t do anything for Mac users.