Hey, thank you for your feedback :)
The “random jumble” is probably cuarentena, which indeed is spanish for ’quarantine*.
I really would like to fix this, but unfortunately, I don’t have a Mac to test on. Please, can you provide your MacOS version and a screenshot of the error message (“it says something about the file being broken”)?
The .pck package is most likely not the problem, I think it’s something about the way the archive is packaged.
You can post here, or even better, contact me in Discord: https://discord.gg/YYJPZvRagr