NetBeans IDE Dev (Build 200912010200) and latest javacard plugin.

After create an project--extended applet. When delete one of the existing import statement, got the following exception:

A java.lang.NullPointerException exception has occurred.
Please report this at http://www.netbeans.org/community/issues.html,
including a copy of your messages.log file as an attachment.
The messages.log file is located in your C:\Documents and Settings\user\.netbeans\dev\var\log folder.


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java.lang.NullPointerException
	at org.netbeans.modules.editor.hints.AnnotationHolder.insertUpdate(AnnotationHolder.java:310)
	at org.netbeans.lib.editor.util.swing.PriorityDocumentListenerList.insertUpdate(PriorityDocumentListenerList.java:79)
	at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:185)
	at org.netbeans.editor.BaseDocument.fireInsertUpdate(BaseDocument.java:1623)
	at org.netbeans.editor.BaseDocumentEvent.undo(BaseDocumentEvent.java:310)
	at org.netbeans.editor.GuardedDocumentEvent.undo(GuardedDocumentEvent.java:69)
	at javax.swing.undo.CompoundEdit.undo(CompoundEdit.java:46)
	at org.netbeans.editor.BaseDocument$AtomicCompoundEdit.undo(BaseDocument.java:2181)
	at org.netbeans.editor.BaseDocument.breakAtomicLock(BaseDocument.java:1814)
	at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:363)
	at org.netbeans.editor.BaseKit$DeleteCharAction.actionPerformed(BaseKit.java:1521)
	at org.netbeans.modules.editor.java.JavaKit$JavaDeleteCharAction.actionPerformed(JavaKit.java:726)
	at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:336)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1636)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2849)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2884)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2812)
	at java.awt.Component.processEvent(Component.java:5911)
	at java.awt.Container.processEvent(Container.java:2030)
	at java.awt.Component.dispatchEventImpl(Component.java:4501)
	at java.awt.Container.dispatchEventImpl(Container.java:2088)
	at java.awt.Component.dispatchEvent(Component.java:4331)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:704)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:969)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:841)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:668)
	at java.awt.Component.dispatchEventImpl(Component.java:4373)
	at java.awt.Container.dispatchEventImpl(Container.java:2088)
	at java.awt.Window.dispatchEventImpl(Window.java:2458)
	at java.awt.Component.dispatchEvent(Component.java:4331)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
	at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:125)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:284)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)