Networker 7.6.5.5-VADP Recovery fails: HTTP Error code 500

Hi!,

We have a little trouble whe trying to recover via VADP (vSphere 5.1 and NW 7.6.5.5) a VM, then we get the following error:

Recovering files of client 'XXXX' from server 'YYYY'.

Connecting to host IP Addres:443.

Recovering to original VC system.

Recovering to original ESX host system.

libCURL SSL support is ENABLED

NetWorker install path: C:\Program Files\Legato\nsr\.

Temporary Directory for VADP created.

Temporary vmMntLoc Directory for VADP created.

Initializing VimServer...

VimServer is initialized

Trying to find the datacenter: Produccion ...

Trying to find the ESX host system: FQDN of the ESXi ...

Trying to find the resource pool: ZZZZ ...

Remapping Virtual Machine config data store from DStore to DStore.

Remapping Virtual Disk 'Hard disk 1' data store from DStoreto DStore.

Upload the VM to vCenter Server.

New VM Name:   XXXX

Datacenter:   DataCenter_Name

Resource Pool: ZZZZ

ESX Host:      ESXi.domain.net

Transport Mode:san

Temporary directory 'C:\Program Files\Legato\nsr\tmp\549546486' for VADP deleted.

C:\Program Files\Legato\nsr\tmp\549546486\1\vm_config.xml

Recovering config file is successful.

82866:nsrvadp_recover: Failed to upload the VM configuration file.

39077:nsrvadp_recover: error, The following internal error occurred: HTTP Error response to PUT command, HTTP response code: 500

Restore of virtual machine failed!...

Completion time: 25/06/2013 13:10:02

Total time taken: 0 hr(s) 00 min(s) 34 sec(s)

Any ideas about this error?.

We have tried to recover to a different DataStore and works fine, this seems to be a error related to the VMWare/DataStore but we have recovered other VM's to the same DS (VMFS5), so how could be the main problem here?.

Thanks in advance for your answers,

Regards,

Alexander Gonzalez