Always verify your MD5 after uploading!
Basically, this happens when a piece of the uploaded file gets lost in transit resulting in a smaller file than the copy you have. As a result, the MD5 won't match.
Usually, this happens when you are on an unstable connection such as 3g/4g but can also happen (although less common) on wifi. It can also happen if you are behind a corporate firewall or proxy that reads/filters/parses your http traffic.
We know it can sometimes be a pain especially if it's a large upload, but the internet is finicky. It's happened to all of us at some point either uploading or downloading large files. That's why we encourage everyone to check MD5 hashes, just in case.
Solutions
- Try again.
- If this consistently happens to you, you can request FTP Import access