Backups and replications are not working correctly with ESX(i) 3.5 hosts
The cause of this is that vRanger 5.3.1 does not support ESX(i) 3.5 hosts
Please upgrade your hosts to at least ESX(i) 4.0 or rollback to vRanger 5.2.1 which provides full support for ESX(i) 3.5 hosts