cann't LANFree BackUp from DS vmfs5

Hi All,

I ahve the problem with vmfs5 on DataStorages, if I try to make LAN_Free backup or restore on this datastore, I get error message:

" Restore task using VDDK SAN failed: An internal error occurred during execution, please contact Vizioncore support if the error persists.  Error Message: 3201 - can't open [DS SAN 1] VM_1/VM_1.vmdk "

it's possible to make backup throught only network.

it's possible to make lan free backup from VM's resided on DataStore vmfs3

for information,

I have vCenter 5.1 (on physical mashine) ESX-5.1 server and vRanger 5.2.1 (another physical mashine).

Thank you!