I keep getting this error: VMware Virtual Disk Manager: Error obtaining version information.
I have 5 VMs and I get the same error regardless witch VM i try to backup
using
vbackup Standard on Server 2003 R2 SP2 x64
VMWare EXSi 6.0 free
vddk5.1.4-22

The same setup on my windows 7 machine works OK

================================== LOG START ==================================
Thinware(R) vBackup(R)
Version: 4.0.2.2754 (Version 4.0, Update 2)
Copyright (c) 2009-2016 Thinware, Inc. All rights reserved.
Visit us at: www.vbackup.com
Process Started: 25/11/2016 4:10:42 PM
Application Settings:
- SMTP Server =
- SMTP Username =
- SMTP Password =
- SMTP From Address =
- Notification Recipients =
- VMware Virtual Disk Manager Application Directory = C:\Program Files (x86)\VMware\VMware Virtual Disk Development Kit\bin
- Disable VMware Virtual Disk Manager Logging = True
Execution Arguments:
- Virtual Machine = VSERVER-SUGAR
- Server = 192.168.0.164:22
- Server Username = root
- Server Password = *********
- Job = vserver-sugar
- Job Type = Backup-Image-SSH
- Backup Root = D:\VMs
- Disk Exclusion = None
- Backups to Keep = 5
- Quiesce Guest File System = True
- Snapshot Virtual Machine Memory = False
- Create Snapshot Task Timeout = 15
- Remove Snapshot Task Timeout = 15
- Encrypt Temporary Password File = False
- Compression Level = None
- Maximum Log Size = 1024
- Backup Type = Image-Full
SMTP server not provided, e-mail notification is disabled.
Server Platform: VMware ESXi 6.0.0 3620759
Virtual Machine Guest OS: Microsoft Windows Server 2008 (64-bit)
License:
- Type: Perpetual
- Status: Active
- Edition in Use: Standard
Backup Folder: D:\VMs\VSERVER-SUGAR
Backup: 161125_161119
No existing temporary snapshots found.
Temporary Snapshot: vBackup-TMP-161125_161119
VMware Virtual Disk Manager: Error obtaining version information.
VMware Virtual Disk Manager response for Hard disk 1: [datastore1] VSERVER-SUGAR-2/VSERVER-SUGAR-2-000002.vmdk:
The system cannot execute the specified program.

E Unable to complete backup. Unable to verify successful transfer of virtual machine virtual disk file D:\VMs\VSERVER-SUGAR\161125_161119\VSERVER-SUGAR-2-000002.vmdk.
Temporary snapshot removed.
Temporary files successfully removed.
Backup data folder deleted in cleaning up after job failure.
Process Completed: 25/11/2016 4:11:49 PM
Elapsed Time: 1 minute and 7 seconds