Data Transfers · Problems and messages
Why did a download stop with “The original changed while it was downloading”?
Short answer: The file changed at its source mid-download, so the transfer stopped instead of mixing two versions into a broken file. Start the download again to fetch the new version.
The file at the other end was replaced or updated while your download was in progress. Rather than stitch together pieces of two different versions into a broken file, Storage Studio stopped the transfer.
What had arrived is kept. Start the download again to fetch the new version from the beginning.
This mostly happens with files that are republished often, such as nightly builds or regularly updated data exports.
Related: Download a file from a link · How do I know a download isn't corrupted?