A DESCRIPTION OF THE REGRESSION :
JDK: Mustang b75
OS:Windows Professional SP1+
When set a disabled JMenuitem's icon property to an imageicon constructed with new ImageIcon("") will cause an exception.
Stack Trace:
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Width
 (-1) and height (-1) cannot be <= 0
        at java.awt.image.DirectColorModel.createCompatibleWritableRaster(Direct
ColorModel.java:999)
        at java.awt.image.BufferedImage.<init>(BufferedImage.java:321)
        at com.sun.java.swing.plaf.windows.WindowsLookAndFeel.getDisabledIcon(Wi
ndowsLookAndFeel.java:2336)
        at javax.swing.AbstractButton.getDisabledIcon(AbstractButton.java:633)
        at javax.swing.plaf.basic.BasicMenuItemUI.paintMenuItem(BasicMenuItemUI.
java:620)
        at javax.swing.plaf.basic.BasicMenuItemUI.paint(BasicMenuItemUI.java:533
)
        at javax.swing.plaf.basic.BasicMenuItemUI.update(BasicMenuItemUI.java:52
9)
        at javax.swing.JComponent.paintComponent(JComponent.java:703)
        at javax.swing.JComponent.paint(JComponent.java:967)
        at javax.swing.JComponent.paintChildren(JComponent.java:804)
        at javax.swing.JComponent.paint(JComponent.java:976)
        at javax.swing.JComponent.paintChildren(JComponent.java:804)
        at javax.swing.JComponent.paint(JComponent.java:976)
        at javax.swing.JComponent.paintChildren(JComponent.java:804)
        at javax.swing.JComponent.paint(JComponent.java:976)
        at javax.swing.JLayeredPane.paint(JLayeredPane.java:559)
        at javax.swing.JComponent.paintChildren(JComponent.java:804)
        at javax.swing.JComponent.paint(JComponent.java:976)
        at javax.swing.JComponent.paintToOffscreen(JComponent.java:5076)
        at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManag
er.java:279)
        at javax.swing.RepaintManager.paint(RepaintManager.java:1105)
        at javax.swing.JComponent._paintImmediately(JComponent.java:5024)
        at javax.swing.JComponent.paintImmediately(JComponent.java:4842)
        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714)

        at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:670)

        at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:6
50)
        at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(System
EventQueueUtilities.java:128)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre
ad.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.
java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)

        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)

        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)


REPRODUCIBLE TESTCASE OR STEPS TO REPRODUCE:
package testbug;

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.UIManager;


public class TestDisabledIcon extends JFrame{

    private JPanel jPanel1 = new JPanel();
    private BorderLayout borderLayout1 = new BorderLayout();
    private JMenuBar jMenuBar1 = new JMenuBar();
    private JMenu jMenu1 = new JMenu();
    private JMenuItem jMenuItem2 = new JMenuItem();
    private ImageIcon icon = new ImageIcon("");


    public TestDisabledIcon() {
        try {
            jbInit();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        this.setSize(new Dimension(400, 343));
        this.setJMenuBar(jMenuBar1);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jPanel1.setLayout(borderLayout1);
        jMenu1.setText("Click Me");
        jMenuItem2.setText("Error");
        jMenuItem2.setEnabled(false);
        jMenuItem2.setIcon(icon);
        this.getContentPane().add(jPanel1, null);
        jMenu1.add(jMenuItem2);
        jMenuBar1.add(jMenu1);
    }
    
    public static void main(String[] argv){
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
            TestDisabledIcon dlg = new TestDisabledIcon();
            dlg.setVisible(true);
            
        } catch (Exception e) {
        }
    }
}


RELEASE LAST WORKED:
5.0 Update 6

RELEASE TEST FAILS:
mustang-beta

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No exception , because sometimes we use new ImageIcon("") as the default
ACTUAL -
An exception is throwed and the menu is not drawed.

Release Regression From : 5.0u6
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.