Hi Jackcowdrey,
I'm sorry to read about your issue.
This is an issue we fixed in Archicad 23 and later versions, and appears only when the project path is too long. There are three possible reasons for this:
1. Project name is too long - reduce project name to a shorter one
2. Project is way deep down in the folder hierarchy - move project closer to the root
3. Your new username on your computer is longer than before - renaming profile could be a solution, but then you need to reinstall Archicad and other things, so I would suggest to go with the first two options.
Make sure that the path of your project data is not longer than 256 characters:
/Users/<your username>/Library/Application Support/GRAPHISOFT/TW Data/AC-22.0.0/<your-project-name-and-the-BIMcloud-where-it-is-hosted>
Kind regards,
Noémi
Noémi Balogh
Community Expert, Admin