Netbackup 6.5.6 Catalog Backup Errors

Hi,

I recently started getting errors when doing Catalog backups -

09/10/2014 12:04:28 - Info bpdbm(pid=2880) staging relational database files for catalog backup      
09/10/2014 12:04:28 - Info bpdbm(pid=2880) staging BMRDB backup to C:\Program Files\VERITAS\NetBackupDB\staging       
09/10/2014 12:04:32 - Info bpdbm(pid=2880) done staging BMRDB backup to C:\Program Files\VERITAS\NetBackupDB\staging      
09/10/2014 12:04:32 - Info bpdbm(pid=2880) staging NBDB backup to C:\Program Files\VERITAS\NetBackupDB\staging       
09/10/2014 12:04:39 - Info bpdbm(pid=2880) done staging NBDB backup to C:\Program Files\VERITAS\NetBackupDB\staging      
09/10/2014 12:05:00 - Info bpdbm(pid=2880) validating BMRDB backup in C:\Program Files\VERITAS\NetBackupDB\staging       
09/10/2014 12:05:00 - Error bpdbm(pid=2880) error validating BMRDB backup in C:\Program Files\VERITAS\NetBackupDB\staging      
09/10/2014 12:05:00 - Info bpdbm(pid=2880) validating NBDB backup in C:\Program Files\VERITAS\NetBackupDB\staging       
09/10/2014 12:05:00 - Error bpdbm(pid=2880) error validating NBDB backup in C:\Program Files\VERITAS\NetBackupDB\staging      
none of the requested files were backed up(2)

Any help would be greatly appreciated.

Thanks,

Chris