[Users] Exception: "failed updating configuration field CAEngineKey" when install ovirt-engine

Hi everybody, I tried to installed ovirt-engine on a fresh fedora 16 x64 machine and got this error: oVirt Engine will be installed using the following configuration: ================================================================= http-port: 8080 https-port: 8443 host-fqdn: ovirt.allstars.com.vn auth-pass: ******** db-pass: ******** org-name: AllStars Studio default-dc-type: NFS nfs-mp: /iso iso-domain-name: ISO override-iptables: no Proceed with the configuration listed above? (yes|no): Proceed with the configuration listed above? (yes|no): yes Installing: Configuring oVirt-engine... [ DONE ] Creating CA... [ DONE ] Editing JBoss Configuration... [ DONE ] Setting Database Security... [ DONE ] Creating Database... Error: failed updating configuration field CAEngineKey to /etc/pki/ovirt-engine/private/ca.pem Any ideas to get through this ?