Hi Jacob_Banda,
We have checked your logs and found out that your server doesn’t support the SIZE command.
When sending the command:
SIZE /windata/sqlserver/SqlBakTest-1853926821.bak
The server returns the following message:
500 Subcommand SIZE not valid.
For the correct work of the application, it is needed to either provide support for the command by your FTP Server, or you can disable the option to verify files after downloading (but this is not very secure, as a broken backup can be uploaded to the destination).
Sorry for the inconvenience.