vRanger attempts to perform tasks on a new VMware host. All tasks fail with the message "Task failed to be created: Creating a snapshot for vRanger"
It is likely that you are trying to perform vRanger operations against the free version of ESXi. vRanger requires the vStorage API in order to function with ESXi. The vStorage API is a licensed feature. vRanger will not work with the free version of ESXi
License the ESXi host.
"vStorage API's for Data Protection" required
To backup your VM's using LAN or LAN-Free configuration please acquire "Essential Kit" (minimum) licensing level from VMware because
To backup your VM's using Hot Add (LAN-Free) configuration please acquire "Enterprise Acceleration Kit" (minimum) licensing level from vMware
vSphere Essentials and Accelerations Kits Comparison:
http://www.vmware.com/products/datacenter-virtualization/vsphere/small-business/compare-kits.html