Vsphere 5.1 with Netbackup 7.5

Hello

I have installed a vcenter server on Linux with vsphere 5.1 update 1

I'm trying the backup with Vmware policy but 156 error

Policy Name:       vsphere5
Options:           0x0
template:          FALSE
audit_reason:         ?
Names:             (none)
Policy Type:       VMware (40)
Active:            yes
Effective date:    06/28/2013 10:00:50
File Restore Raw:  yes
Mult. Data Stream: no
Perform Snapshot Backup:   yes
Snapshot Method:           VMware_v2
Snapshot Method Arguments: file_system_optimization=1,snapact=2,drive_selection=0,Virtual_machine_backup=2,disable_quiesce=0,nameuse=1,exclude_swap=1,skipnodisk=0,post_events=1,trantype=san:hotadd:nbd:nbdssl
Perform Offhost Backup:    yes
Backup Copy:               0
Use Data Mover:            no
Data Mover Type:           -1
Use Alternate Client:      no
Alternate Client Name:     MEDIA_SERVER
Use Virtual Machine:      1
Hyper-V Server Name:     (none)
Enable Instant Recovery:   no
Policy Priority:   0
Max Jobs/Policy:   Unlimited
Disaster Recovery: 0
Collect BMR Info:  no
Keyword:           (none specified)
Data Classification:       -
Residence is Storage Lifecycle Policy:    no
Client Encrypt:    no
Checkpoint:        no
Residence:         wvcenter-hcart-robot-tld-0
Volume Pool:       DIARIO
Server Group:      *ANY*
Granular Restore Info:  no
Exchange Source attributes:              no
Exchange 2010 Preferred Server: (none defined)
Application Discovery:      no
Discovery Lifetime:      0 seconds
ASC Application and attributes: (none defined)
Generation:      13
Ignore Client Direct:  no
Enable Metadata Indexing:  no
Index server name:  NULL
Use Accelerator:  no
Client/HW/OS/Pri/DMI:  WUNIJOB_CLON vmx-07 winNetStandardGuest 0 0 0 0 ?
Include:           ALL_LOCAL_DRIVES
Schedule:              prueba
  Type:                FULL (0)
  Frequency:           7 day(s) (604800 seconds)
  Maximum MPX:         1
  Synthetic:           0
  Checksum Change Detection: 0
  PFI Recovery:        0
  Retention Level:     5 (1 day)
  u-wind/o/d:          0 0
  Incr Type:           DELTA (0)
  Alt Read Host:       (none defined)
  Max Frag Size:       0 MB
  Number Copies:       1
  Fail on Error:       0
  Residence:           (specific storage unit not required)
  Volume Pool:         (same as policy volume pool)
  Server Group:        (same as specified for policy)
  Residence is Storage Lifecycle Policy:         0
  Schedule indexing:     0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00

The error is

"bpfis: Failed to open flush NetBackup Change Journal databases mutex"