I can't restore the database in OpManager 8050. I have the following errors:

NetFlow Plug-In is not installed

jdbc.RestoreException: File does not exists : C:\Program Files\AdventNet\ME\OpMa

nager\BackUp_FEB23_2012_11_02_34_8050.zip.

        at jdbc.RestoreBackup.extractZip(RestoreBackup.java:995)

        at jdbc.RestoreBackup.restoreDB(RestoreBackup.java:65)

        at jdbc.RestoreBackup.doRestore(RestoreBackup.java:1116)

        at jdbc.RestoreBackup.main(RestoreBackup.java:1122)

Can you please help me? Thanks.