backupconfig. erro.

backupconfig. erro.

When do I run "backupconfig",the fellow erro.
 
 
java.io.FileNotFoundException: config_backup_ (系统找不到指定的文件。)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(Unknown Source)
        at java.io.FileInputStream.<init>(Unknown Source)
        at com.adventnet.netflow.dbutils.ZipbackConfiguration.unZip(ZipbackConfi
guration.java:171)
        at com.adventnet.netflow.dbutils.ZipbackConfiguration.main(ZipbackConfig
uration.java:57)
The configuration file successfully created
The configuration backup is in folder  NetFlowCentral-Home/config_backup_ 六/1/3
222640.zip
To restore the configuration file, Copy the config_backup_ 六/1/3222640.zip into
 the  New NetFlowCentral-Home and restore it by executing restoreConfig.sh with
config_backup_ 六/1/3222640.zip as arguement
Usage restoreConfig.bat config_backup_ 六/1/3222640.zip

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