Palo Alto backup using NCM

I am trying to use NCM as a secondary backup for Palo Alto devices.  Currently I have the device set to log in via ssh2 and transfer config using SCP.  The test completes fine but when the NCM job runs, I am getting an error, (Error Downloading Config to SCP Host:).  Any one else seeing this or having success backing up config from Palo devices?  I would love to get this working.  NCM version 7.9