Hi,

   After some clipboards problems (see stack trace below) the undo/redo feature is 
totally broken - it refuses to undo the latest changes - it undoes the changes, I made 
several mintess ago.


Exception occurred during event dispatching:
java.lang.IllegalStateException: cannot open system clipboard
        at sun.awt.windows.WClipboard.openClipboard(Native Method)
        at sun.awt.windows.FullyRenderedTransferable.<init>(WClipboard.java:158)

        at sun.awt.windows.WClipboard.getContents(WClipboard.java:86)
        at com.intellij.ide.CopyPasteManager.b(CopyPasteManager.java:0)
        at com.intellij.ide.CopyPasteManager.a(CopyPasteManager.java:14)
        at com.intellij.ide.CopyPasteManager.a(CopyPasteManager.java:37)
        at com.intellij.ide.structureView.impl.v.getTreeCellRendererComponent(v.
java:0)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimen
sions(BasicTreeUI.java:2611)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayout
Cache.java:406)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePrefer
redSize(VariableHeightLayoutCache.java:1293)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePrefer
redSize(VariableHeightLayoutCache.java:1284)
        at javax.swing.tree.VariableHeightLayoutCache.treeNodesInserted(Variable
HeightLayoutCache.java:459)
        at javax.swing.plaf.basic.BasicTreeUI$TreeModelHandler.treeNodesInserted
(BasicTreeUI.java:2355)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesInserted(DefaultTreeMo
del.java:466)
        at javax.swing.tree.DefaultTreeModel.nodesWereInserted(DefaultTreeModel.
java:289)
        at javax.swing.tree.DefaultTreeModel.insertNodeInto(DefaultTreeModel.jav
a:218)
        at com.intellij.ide.util.a.b.d(b.java:23)
        at com.intellij.ide.util.a.b.a(b.java:198)
        at com.intellij.ide.util.a.f.run(f.java:0)
        at com.intellij.psi.impl.r.a(r.java:204)
        at com.intellij.ide.structureView.impl.r.a(r.java:80)
        at com.intellij.ide.util.a.b.d(b.java:155)
        at com.intellij.ide.structureView.impl.q.<init>(q.java:48)
        at com.intellij.ide.structureView.impl.w.d(w.java:106)
        at com.intellij.ide.structureView.impl.w.<init>(w.java:81)
        at com.intellij.ide.structureView.impl.p.a(p.java:1)
        at com.intellij.ide.impl.dg.d(dg.java:33)
        at com.intellij.ide.impl.dg.a(dg.java:17)
        at com.intellij.ide.impl.y.a(y.java)
        at com.intellij.ide.desktop.impl.j.g(j.java:46)
        at com.intellij.ide.desktop.impl.j.a(j.java:21)
        at com.intellij.ide.desktop.impl.dn.stateChanged(dn.java:5)
        at javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingl
eSelectionModel.java:99)
        at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingl
eSelectionModel.java:51)
        at javax.swing.JTabbedPane.setSelectedIndex(JTabbedPane.java:349)
        at javax.swing.plaf.basic.BasicTabbedPaneUI$MouseHandler.mousePressed(Ba
sicTabbedPaneUI.java:1822)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.Component.processMouseEvent(Component.java:3712)
        at java.awt.Component.processEvent(Component.java:3544)
        at java.awt.Container.processEvent(Container.java:1164)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451
)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2210)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
        at java.awt.Container.dispatchEventImpl(Container.java:1200)
        at java.awt.Window.dispatchEventImpl(Window.java:926)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
Exception occurred during event dispatching:
java.lang.IllegalStateException: cannot open system clipboard
        at sun.awt.windows.WClipboard.openClipboard(Native Method)
        at sun.awt.windows.FullyRenderedTransferable.<init>(WClipboard.java:158)

        at sun.awt.windows.WClipboard.getContents(WClipboard.java:86)
        at com.intellij.ide.CopyPasteManager.b(CopyPasteManager.java:0)
        at com.intellij.ide.CopyPasteManager.a(CopyPasteManager.java:14)
        at com.intellij.ide.CopyPasteManager.a(CopyPasteManager.java:37)
        at com.intellij.ide.structureView.impl.v.getTreeCellRendererComponent(v.
java:0)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimen
sions(BasicTreeUI.java:2611)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayout
Cache.java:406)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePrefer
redSize(VariableHeightLayoutCache.java:1293)
        at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePrefer
redSize(VariableHeightLayoutCache.java:1284)
        at javax.swing.tree.VariableHeightLayoutCache.treeNodesInserted(Variable
HeightLayoutCache.java:459)
        at javax.swing.plaf.basic.BasicTreeUI$TreeModelHandler.treeNodesInserted
(BasicTreeUI.java:2355)
        at javax.swing.tree.DefaultTreeModel.fireTreeNodesInserted(DefaultTreeMo
del.java:466)
        at javax.swing.tree.DefaultTreeModel.nodesWereInserted(DefaultTreeModel.
java:289)
        at javax.swing.tree.DefaultTreeModel.insertNodeInto(DefaultTreeModel.jav
a:218)
        at com.intellij.ide.util.a.b.d(b.java:23)
        at com.intellij.ide.util.a.b.a(b.java:198)
        at com.intellij.ide.util.a.f.run(f.java:0)
        at com.intellij.psi.impl.r.a(r.java:204)
        at com.intellij.ide.structureView.impl.r.a(r.java:80)
        at com.intellij.ide.util.a.b.d(b.java:155)
        at com.intellij.ide.structureView.impl.q.<init>(q.java:48)
        at com.intellij.ide.structureView.impl.w.d(w.java:106)
        at com.intellij.ide.structureView.impl.w.<init>(w.java:81)
        at com.intellij.ide.structureView.impl.p.a(p.java:1)
        at com.intellij.ide.impl.dg.d(dg.java:33)
        at com.intellij.ide.impl.dg.a(dg.java:17)
        at com.intellij.ide.impl.y.a(y.java)
        at com.intellij.ide.desktop.impl.j.g(j.java:46)
        at com.intellij.ide.desktop.impl.j.a(j.java:21)
        at com.intellij.ide.desktop.impl.dn.stateChanged(dn.java:5)
        at javax.swing.DefaultSingleSelectionModel.fireStateChanged(DefaultSingl
eSelectionModel.java:99)
        at javax.swing.DefaultSingleSelectionModel.setSelectedIndex(DefaultSingl
eSelectionModel.java:51)
        at javax.swing.JTabbedPane.setSelectedIndex(JTabbedPane.java:349)
        at javax.swing.plaf.basic.BasicTabbedPaneUI$MouseHandler.mousePressed(Ba
sicTabbedPaneUI.java:1822)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:22
0)
        at java.awt.Component.processMouseEvent(Component.java:3712)
        at java.awt.Component.processEvent(Component.java:3544)
        at java.awt.Container.processEvent(Container.java:1164)
        at java.awt.Component.dispatchEventImpl(Component.java:2593)
        at java.awt.Container.dispatchEventImpl(Container.java:1213)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2451
)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2210)

        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2125)
        at java.awt.Container.dispatchEventImpl(Container.java:1200)
        at java.awt.Window.dispatchEventImpl(Window.java:926)
        at java.awt.Component.dispatchEvent(Component.java:2497)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.java:98)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
[command] IntelliJ IDEA (Pandora)  build #517
[command] JDK: 1.3.1_01
[command] VM: Java HotSpot(TM) Client VM
[command] Vendor: Sun Microsystems Inc.
[command] OS: Windows 2000
[command] java.lang.IllegalStateException: cannot open system clipboard
[command]       at sun.awt.windows.WClipboard.openClipboard(Native Method)
[command]       at sun.awt.windows.WClipboard.setContents(WClipboard.java:59)
[command]       at com.intellij.codeInsight.a.m.actionPerformed(m.java:51)
[command]       at com.intellij.editor.b.y.run(y.java)
[command]       at com.intellij.command.a.c.a(c.java:49)
[command]       at com.intellij.editor.b.bf.a(bf.java:7)
[command]       at com.intellij.editor.b.bf.c(bf.java:14)
[command]       at com.intellij.jd.actions.common.CopyAction.actionPerformed(Cop
yAction.java:10)
[command]       at com.intellij.ide.desktop.impl.IdeMainFrame.processKeyEvent(Id
eMainFrame.java:60)
[command]       at com.intellij.ide.desktop.impl.IdeMainFrame.a(IdeMainFrame.jav
a:27)
[command]       at com.intellij.editor.b.f.a(f.java:163)
[command]       at com.intellij.editor.b.s.a(s.java:1112)
[command]       at com.intellij.editor.b.s.a(s.java:922)
[command]       at com.intellij.editor.b.c.keyPressed(c.java)
[command]       at java.awt.Component.processKeyEvent(Component.java:3677)
[command]       at javax.swing.JComponent.processKeyEvent(JComponent.java:2014)
[command]       at java.awt.Component.processEvent(Component.java:3553)
[command]       at java.awt.Container.processEvent(Container.java:1164)
[command]       at java.awt.Component.dispatchEventImpl(Component.java:2593)
[command]       at java.awt.Container.dispatchEventImpl(Container.java:1213)
[command]       at java.awt.Component.dispatchEvent(Component.java:2497)
[command]       at java.awt.LightweightDispatcher.processKeyEvent(Container.java
:2155)
[command]       at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2
135)
[command]       at java.awt.Container.dispatchEventImpl(Container.java:1200)
[command]       at java.awt.Window.dispatchEventImpl(Window.java:926)
[command]       at java.awt.Component.dispatchEvent(Component.java:2497)
[command]       at java.awt.EventQueue.dispatchEvent(EventQueue.java:339)
[command]       at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDi
spatchThread.java:131)
[command]       at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDisp
atchThread.java:98)
[command]       at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.j
ava:93)
[command]       at java.awt.EventDispatchThread.run(EventDispatchThread.java:85)
  

---
Sincerely yours,
Mike Aizatsky
___________________________________________________________________________
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