Failed to retrieve the list of VMs for vApp 'vApp name' from the vCloud Director.
The VM information for the specified vApp was not retrieved from the vCloud Director. This failure might be caused by the vCloud Director not being alive or accessible.
The VMs that compose the specified vApp are not backed up. Processing continues to the next vApp.
Make sure that the vCloud Director is alive and accessible. Check the dsmerror.log file for specific errors that are related to this issue.