Exchange 2007 Database recovery from Flat File

Hello folks,

I got a bit of a problem here...

I need to restore an exchange 2007 database from an AST backup which puts the backup to a flat file. The same as if it was extracted from the Avamar Grid.

I need to restore the flat file but I am getting errors that the backup signature doesn't match.

As anyone run accross this?

C:\Program Files\avs\bin>avexchange07.exe -R -V "F:\Second Storage Group"
avexchange07 Info <7712>: Opening cluster with network name: XXXXXXXXXXXXX
avexchange07 Info <0000>: Server name: BP@☺
avexchange07 Info <0000>: Server name: BP@☺
avexchange07 Info <0000>: Plug-in avexchange07 is started.
avexchange07 Info <0000>: Command line restore.
avexchange07 Info <0000>: Backup file exchange.bak opened successfully.
avexchange07 Info <0000>: avexch07_file_stream::ReadFile( Total            0 )
      0/sec
avexchange07 FATAL <6370>: Backup signature does not match, backup is probably c
orrupt 0 4B4142FF avexchange07 Info <0000>: avexch07_file_stream::~avexch07_file
_stream( Total            0 )        0/sec
avexchange07 Info <6287>: elasped time = 0
avexchange07 Error <6233>: Operation terminated with error C80004B6, 0xc80004b6,
The database file is either damaged or cannot be found.