Novell ZENworks 10 Configuration Management with Support Pack 2 - 10.2
System Update was failing to properly download the content files from the ZCM servers with the following error:
'Storing a file in the cache failed "None of the source locations could be found" '
This is fixed in version 10.2.1 - see KB 7003766 "ZENworks 10 Configuration Management 10.2.1 - update information and list of fixes" which can be found at https://www.novell.com/support
The System Update agent was not properly failing over to additional servers in the event it could not properly communicate with the first server.