With mustang b76, b77.

../../../bin/java -ea -esa -jar SwingSet2.jar
Picked up _JAVA_OPTIONS: -Dswing.boldMetal=false -Dawt.useSystemAAFontSettings=on
Exception in thread "main" java.lang.AssertionError
        at javax.swing.TransferHandler$TransferSupport.setDNDVariables(TransferHandle r.java:250)
        at javax.swing.TransferHandler$TransferSupport.<init>(TransferHandler.java:21 3)
        at javax.swing.TransferHandler$TransferSupport.<init>(TransferHandler.java:18 4)
        at javax.swing.TransferHandler$DropHandler.<init>(TransferHandler.java:1232)
        at javax.swing.TransferHandler$DropHandler.<init>(TransferHandler.java:1220)
        at javax.swing.TransferHandler.getDropTargetListener(TransferHandler.java:103 6)
        at javax.swing.TransferHandler.access$200(TransferHandler.java:59)
        at javax.swing.TransferHandler$SwingDropTarget.<init>(TransferHandler.java:11 35)
        at javax.swing.SwingUtilities.installSwingDropTargetAsNecessary(SwingUtilitie s.java:84)
        at javax.swing.JComponent.setTransferHandler(JComponent.java:3190)
        at javax.swing.plaf.basic.BasicTextUI.installDefaults2(BasicTextUI.java:279)
        at javax.swing.plaf.basic.BasicTextUI.installUI(BasicTextUI.java:687)
        at javax.swing.plaf.basic.BasicTextFieldUI.installUI(BasicTextFieldUI.java:57 )
        at javax.swing.JComponent.setUI(JComponent.java:613)
        at javax.swing.text.JTextComponent.setUI(JTextComponent.java:321)
        at javax.swing.text.JTextComponent.updateUI(JTextComponent.java:331)
        at javax.swing.text.JTextComponent.<init>(JTextComponent.java:305)
        at javax.swing.JTextField.<init>(JTextField.java:207)
        at javax.swing.JTextField.<init>(JTextField.java:159)
        at SwingSet2.initializeDemo(SwingSet2.java:287)
        at SwingSet2.<init>(SwingSet2.java:224)
        at SwingSet2.main(SwingSet2.java:248)