Java.lang.VerifyError: Cannot inherit from final class

Assuntos Gerais
#1

E ai pessoal.

Estou com um problema com minhas 2 classes para relatório.
Ele está me passando essa mensagem ai ao compilar:

java.lang.VerifyError: Cannot inherit from final class

Minhas 2 classes, primeiro a que cria o Frame:

[code]package digitacoes;

import com.crystaldecisions.reports.sdk.;
import com.crystaldecisions.sdk.occa.report.lib.;
import com.crystaldecisions.ReportViewer.*;

import java.awt.;
import java.awt.event.;
import javax.swing.*;

public class ReportViewerFrame extends JFrame {

private  int XPOS = 75;
private  int YPOS = 50;
private  int larg = 750;
private  int alt = 600;

//Crystal Report thick-client viewer object that will be embedded into the JFrame.
private ReportViewerBean reportViewer = new ReportViewerBean();
//This report will be viewed in the thick-client viewer.
private ReportClientDocument reportClientDoc = new ReportClientDocument();

/**
 * Constructs and launches the new frame.
 */
public ReportViewerFrame(ReportClientDocument reportClientDoc) throws Exception {

	//Initialize frame properties.
	this.setResizable(true);
	this.setLocation(XPOS, YPOS);
	this.setSize(larg, alt);
	this.setTitle("Crystal Report Java Viewer");

	//Add GUI components to the frame including the ReportViewerBean.
	addComponents();

	//Add GUI listeners to the frame.
	addListeners();

	//Set the report that the ReportViewerBean will display.
	this.reportClientDoc = reportClientDoc;
	reportViewer.setReportSource(reportClientDoc.getReportSource());
	reportViewer.init();
	reportViewer.start();

	//Display the frame.
	this.setVisible(true);

}

private void addComponents() {

  	//Create new panel and add the ReportViewerBean to it.
	Container cp = getContentPane();
	cp.setLayout(new BorderLayout());
	cp.add(reportViewer);

}


private void addListeners() {


	addWindowListener(new WindowAdapter() {
		public void windowClosing(WindowEvent e) {
			quit();
		}
	});

}


public void quit() {

  	try {
  		//Release report.
  		reportClientDoc.close();
		System.exit(0);
  	}
  	catch(ReportSDKException ex) {
  		ex.printStackTrace();
  	}

}

}[/code]

E AGORA A CLASSE QUE EXECUTA.

[code]package digitacoes;

import com.crystaldecisions.reports.sdk.;
import com.crystaldecisions.sdk.occa.report.lib.;

import java.awt.Color;
import javax.swing.*;

public class JRCViewReport {

public static String REPORT_NAME = "D:\\Java\\Projetos\\RPT\\Report1.rpt";

public static void launchApplication() {

        try {


        ReportClientDocument reportClientDoc = new ReportClientDocument();
        reportClientDoc.open(REPORT_NAME, 0);


        new ReportViewerFrame(reportClientDoc);

        }
        catch(ReportSDKException ex) {
        System.out.println(ex);
        }
        catch(Exception ex) {
        System.out.println(ex);
        }

}

public static void main(String [] args) {

	//Event-dispatching thread to run Swing GUI.  This is good practice for Swing applications
	//to help ensure that events are dispatched in a predicatable order.
	//For more information on using this method, refer to the SUN site below for more details:
	//http://java.sun.com/products/jfc/tsc/articles/threads/threads1.html
	SwingUtilities.invokeLater(new Runnable() {
		public void run() {
			//Hand-off to worker function to start application.
			launchApplication();
		}
	});

}

}[/code]
Se alguem me tirar desse aperto valeu galera.

#2