after I change the connection from "hsqldb" to "mssql" I receive following error message "15:30:05,046 ERROR [JDBCExceptionReporter] Violation of UNIQUE KEY constraint 'UQ__JBP_OBJECT_NODE__25869641'. Cannot insert duplicate key in object 'JBP_OBJECT_NODE'. 15:30:05,062 ERROR [MainDeployer] Could not start deployment: file:/D:/jboss/server/default/deploy/jboss-portal.sar/conf/data/default-object.xml" . The tables are generated. Who can help?