(4207) Could not fetch snapshot metadata or state files

hi all please i have netbackup 7.6 on linux 

wend i tried to backup exchanche i have this error :

²20 avr. 2015 15:47:58 - Info nbjm (pid=4200) starting backup job (jobid=50468) for client mailboxeserver, policy nbuexchgdb, schedule exchbckweek_full
20 avr. 2015 15:47:58 - Info nbjm (pid=4200) requesting STANDARD_RESOURCE resources from RB for backup job (jobid=50468, request id:{9E269824-E774-11E4-A3F7-99E7FA481C67})
20 avr. 2015 15:47:58 - requesting resource studskfile
20 avr. 2015 15:47:58 - requesting resource netbserver.NBU_CLIENT.MAXJOBS.mailboxeserver
20 avr. 2015 15:47:58 - requesting resource netbserver.NBU_POLICY.MAXJOBS.nbuexchgdb
20 avr. 2015 15:47:58 - granted resource  netbserver.NBU_CLIENT.MAXJOBS.mailboxeserver
20 avr. 2015 15:47:58 - granted resource  netbserver.NBU_POLICY.MAXJOBS.nbuexchgdb
20 avr. 2015 15:47:58 - granted resource  MediaID=@aaaay;DiskVolume=PureDiskVolume;DiskPool=MSDP01;Path=PureDiskVolume;StorageServer=netbserver;MediaServer=netbserver
20 avr. 2015 15:47:58 - granted resource  studskfile
20 avr. 2015 15:47:58 - estimated 298453854 kbytes needed
20 avr. 2015 15:47:58 - begin Parent Job
20 avr. 2015 15:47:58 - begin Snapshot: Start Notify Script
20 avr. 2015 15:47:58 - Info RUNCMD (pid=3052) started
20 avr. 2015 15:47:58 - Info RUNCMD (pid=3052) exiting with status: 0
Operation Status: 0
20 avr. 2015 15:47:58 - end Snapshot: Start Notify Script; elapsed time 0:00:00
20 avr. 2015 15:47:58 - begin Snapshot: Step By Condition
Operation Status: 0
20 avr. 2015 15:47:58 - end Snapshot: Step By Condition; elapsed time 0:00:00
20 avr. 2015 15:47:58 - begin Snapshot: Stream Discovery
Operation Status: 0
20 avr. 2015 15:47:58 - end Snapshot: Stream Discovery; elapsed time 0:00:00
20 avr. 2015 15:47:58 - begin Snapshot: Read File List
Operation Status: 0
20 avr. 2015 15:47:58 - end Snapshot: Read File List; elapsed time 0:00:00
20 avr. 2015 15:47:58 - begin Snapshot: Create Snapshot
20 avr. 2015 15:47:59 - started process bpbrm (pid=3058)
20 avr. 2015 15:48:03 - Info bpbrm (pid=3058) mailboxeserver is the host to backup data from
20 avr. 2015 15:48:03 - Info bpbrm (pid=3058) reading file list for client
20 avr. 2015 15:48:03 - Info bpbrm (pid=3058) start bpfis on client
20 avr. 2015 15:48:03 - Info bpbrm (pid=3058) Starting create snapshot processing
20 avr. 2015 15:48:04 - Info bpfis (pid=9244) Backup started
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - vfm_freeze_commit: method: VSS_Writer, type: FIM, function: VSS_Writer_freeze_commit
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - 
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - vfm_freeze_commit: method: VSS_Writer, type: FIM, function: VSS_Writer_freeze_commit
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - 
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - snapshot processing failed, status 156
20 avr. 2015 15:48:31 - Critical bpbrm (pid=3058) from client mailboxeserver: FTL - snapshot creation failed - SNAPSHOT_NOTIFICATION::PostSnapshot failed., status 130
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - NEW_STREAM0 is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - Microsoft Information Store:\mtnmailbox1\ is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - NEW_STREAM1 is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - Microsoft Information Store:\mtnmailbox2\ is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - NEW_STREAM2 is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - Microsoft Information Store:\mtnmailbox3\ is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - NEW_STREAM3 is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - Microsoft Information Store:\mtnmailbox3bis\ is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - NEW_STREAM4 is not frozen
20 avr. 2015 15:48:31 - Warning bpbrm (pid=3058) from client mailboxeserver: WRN - Microsoft Information Store:\mtnmailbox5\ is not frozen
20 avr. 2015 15:48:31 - Info bpfis (pid=9244) done. status: 130
20 avr. 2015 15:48:31 - end Snapshot: Create Snapshot; elapsed time 0:00:33
20 avr. 2015 15:48:31 - Info bpfis (pid=9244) done. status: 130: system error occurred
20 avr. 2015 15:48:31 - end writing
Operation Status: 130
20 avr. 2015 15:48:31 - end Parent Job; elapsed time 0:00:33
20 avr. 2015 15:48:31 - begin Snapshot: Stop On Error
Operation Status: 0
20 avr. 2015 15:48:31 - end Snapshot: Stop On Error; elapsed time 0:00:00
20 avr. 2015 15:48:31 - begin Snapshot: Delete Snapshot
20 avr. 2015 15:48:31 - started process bpbrm (pid=3261)
20 avr. 2015 15:48:32 - Info bpbrm (pid=3261) Starting delete snapshot processing
20 avr. 2015 15:48:34 - Info bpfis (pid=9560) Backup started
20 avr. 2015 15:48:34 - Critical bpbrm (pid=3261) from client mailboxeserver: cannot open C:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.mailboxeserver_1429544878.1.0
20 avr. 2015 15:48:35 - Info bpfis (pid=9560) done. status: 4207
20 avr. 2015 15:48:35 - end Snapshot: Delete Snapshot; elapsed time 0:00:04
20 avr. 2015 15:48:35 - Info bpfis (pid=9560) done. status: 4207: Could not fetch snapshot metadata or state files
20 avr. 2015 15:48:35 - end writing
Operation Status: 4207
20 avr. 2015 15:48:35 - begin Snapshot: End Notify Script
20 avr. 2015 15:48:35 - Info RUNCMD (pid=3266) started
20 avr. 2015 15:48:35 - Info RUNCMD (pid=3266) exiting with status: 0
Operation Status: 0
20 avr. 2015 15:48:35 - end Snapshot: End Notify Script; elapsed time 0:00:00
Operation Status: 4207
Could not fetch snapshot metadata or state files  (4207)

 

 

 

 

please i need help !!!