Unable to read the contents of the HTTP body

We are receiving the error: Unable to read the contents of the HTTP body when uploading documents. We have verified the file is valid, as well as the credentials, we have also successfully uploaded the same document from another program using the same credentials, but for some reason the application in question continues to get this exception. We have retried the submission numerous times, and all attempts for this document and all others continue to fail.

We are looking for some explanation on why this is failing.