Får en exception jeg ikke kan gennemskue?

Jeg får en ClassCastException jeg ikke lige kan gennemskue hvorfor. Jeg kalder denne metode i min BMP bean:

    public Enumeration ejbFindAll()
    {
        Vector l = new Vector();
        Connection con = null;
        ResultSet rs = null;
        try
        {
            con = getConnection();
            Statement s = con.createStatement();
            rs = s.executeQuery("SELECT * FROM file");
            while (rs.next())
            {
                File f = new File(rs.getInt("id"),
                rs.getString("title"),
                rs.getInt("length"),
                rs.getDate("startDate"),
                rs.getDate("endDate"),
                rs.getString("description"),
                rs.getDate("created"),
                rs.getString("userName"),
                rs.getInt("typeId"));
               
                l.add(f);
            }
        }
        catch (SQLException e)
        {
            e.printStackTrace();
        }     
        finally
        {
            try
            {
                if (rs != null)
                {
                    rs.close();
                }
                if (con != null)
                {
                    con.close();
                }
            }
            catch (SQLException e)
            {
            }
        }
        return l.elements();
    }

Når jeg så i min klient gerne have fat på listen med beans, gør jeg således:


    public void getDataBMP()
    {
        setRowCount(0);
        Iterator it=null;
        Enumeration col=null;
       
        try
        {
            Context ctx = new InitialContext();
            Object temp = ctx.lookup("ejb/entity/BMP/FileBMP");
            FileBMPRemoteHome fileRemoteHome = (FileBMPRemoteHome) PortableRemoteObject.narrow(temp,FileBMPRemoteHome.class);

            col = fileRemoteHome.findAll();
        }
        catch (ClassCastException e)
        {
            e.printStackTrace();
        }
        catch (NamingException e)
        {
            e.printStackTrace();
        }
        catch (FinderException e)
        {
            e.printStackTrace();
        }
        catch(RemoteException e)
        {
            e.printStackTrace();
        }       
        while(col.hasMoreElements())
        {
            File obj = (File) col.nextElement();//fejl opstår her
           
            addRow(obj.getVector());
        }
    }



Jeg får denne exception: 


java.lang.ClassCastException
        at org.openbroad.j2ee.client.user.view.model.FilelistModel.getDataBMP(FilelistModel.java:105)
        at org.openbroad.j2ee.client.user.view.model.FilelistModel.<init>(FilelistModel.java:42)
        at org.openbroad.j2ee.client.user.view.Filelist.initComponents(Filelist.java:210)
        at org.openbroad.j2ee.client.user.view.Filelist.<init>(Filelist.java:56)
        at org.openbroad.j2ee.client.user.view.OpenBroad.jButton3ActionPerformed(OpenBroad.java:354)
        at org.openbroad.j2ee.client.user.view.OpenBroad.access$200(OpenBroad.java:30)
        at org.openbroad.j2ee.client.user.view.OpenBroad$3.actionPerformed(OpenBroad.java:104)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
        at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
        at java.awt.Component.processMouseEvent(Component.java:5100)
        at java.awt.Component.processEvent(Component.java:4897)
        at java.awt.Container.processEvent(Container.java:1569)
        at java.awt.Component.dispatchEventImpl(Component.java:3615)
        at java.awt.Container.dispatchEventImpl(Container.java:1627)
        at java.awt.Component.dispatchEvent(Component.java:3477)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
        at java.awt.Container.dispatchEventImpl(Container.java:1613)
        at java.awt.Window.dispatchEventImpl(Window.java:1606)
        at java.awt.Component.dispatchEvent(Component.java:3477)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)