Restoring errors

Hi Support Team,

When i tried to restore the backup archive got following errors. Please identify whats is the root cause behind.

Thanks.
Babrus

C:\AdventNet\ME\OpManager\bin\backup>restoredb.bat/sh backup_dec22_2006_11_54.data

********************************************************
* Warning!!! Attempting to restore the data !!! *
* This will result in loosing your current data!!! *
* Press Ctl+c to quit the operation. *
********************************************************
Press any key to continue . . .
Backup File does't exist. Please verify the file name.
java.lang.Exception: Backup does not exist
at jdbc.RestoreBackup.deCompressData(RestoreBackup.java:993)
at jdbc.RestoreBackup.main(RestoreBackup.java:1151)
Exception in thread "main" java.lang.Exception: Backup File Modified
at jdbc.RestoreBackup.deCompressData(RestoreBackup.java:1015)
at jdbc.RestoreBackup.main(RestoreBackup.java:1151)
Press any key to continue . . .