java.lang.NullPointerException
        at org.netbeans.api.db.explorer.DatabaseConnection.create(DatabaseConnection.java:125)
        at org.netbeans.modules.visualweb.dataconnectivity.sql.DesignTimeDataSource.run(DesignTimeDataSource.java:836)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)