This is resolved in Raiser's Edge 7.96 patch 3, applied to databases in Blackbaud Hosting Services in March 2017 and planned for download availability in April 2017. For further updates on releases as they become available, please see our Community Release page. 

OR

To resolve this issue for future submissions please complete the following steps:
  1. In the Data Health Center click FTP Credentials
  2. Remove any space from the end of the Username
For assistance with your current results file please click Chat with Support and reference this article.  The analyst will assist you with getting your results file uploaded to your FTP and processing the file using the Manual Data Return.