Unknown Error

Hello everyone,

I'm trying to backup my Enterprise Vault with NetBackup and I got the following error

18/04/2013 12:09:48 - Warning bpbrm(pid=7208) from client EZSV129: WRN - can't open file: Enterprise Vault Resources:\EV Site (EVSite (EZSV129))\EV Vault Store Group (Mail Archiving EZSV125)\EV Vault Store (Mail Archiving)\All Partitions\Open Partition\Mail Archiving Ptn4 (//EZSV125/M$/EnterpriseVault)\2013\04-11\F\154\F154977A8544E070C1E5477C4B2C71F1.DVS (WIN32 55: Unknown error)

Anyone can help me on that ?

I have NetBackup 7.5 and Enterprise Vault 10.0.3

There are no log errors on that Sever EZSV125

Thanks in advance