[The Fold]

So this morning I come in and the follow was in /var/log/zim_backup.log

      Diff Backup started at: 03:00
/usr/local/bin/zmbac.sh: line 996: [: /opt/backup/zimbra_dars/30_Zimbra_Backup_28-July-2008_FULL: binary operator expected

and /opt/backup/zimbra_dars/Backuplist-29-July-2008.txt shows

Aborting program. User refused to continue while asking: /opt/backup/zimbra_dars/30_Zimbra_Backup_29-July-2008_DIFF.1.dar is required for further operation, please provide the file.

Any ideas??