Error in Backup / Restore for domains...

[JLChafardet]

Hello, I have been trying to do a domain backup and always I get errors about tomcat or something.... the error that plesk showns says:

[ERROR]
Unable to create the backup file: Error domain_bu execution: domain bu:
/usr/local/psa/admin/bin/domainmngr failed:

tomcatmng: Unable to open rpm db: cannot open Packages index using db3 - (-30982)
..... and some other lines [/ERROR]

the ScreenShot is located in:
http://chafardet.com/error_psabackup.gif

This is driving me crazy as i dont know what to do lol.

All help is apreciated,

Best regards,

__________________
JLChafardet