To fix the Mac version of the build, the config and save folder location has changed from previous versions.

On Mac, this has moved from:

Users/<username>/Documents/Captain Astral Sea

To:

Users/<username>/Library/Application Support/Captain Astral Sea

On Windows, this has moved from:

C:\\Users\\<username>\\Documents\\Captain Astral Sea

To:

C:\\Users\\<username>\\AppData\\Local\\Wuufu\\Captain Astral Sea

Feel free to update your saves!