Erasing user-dir seems to fix the problem, however I should point out 
my old user-dir was from yesterday's build and it too was brand new.. 
The bug seems to happen when moving from yesterday's build to 
today's. Perhaps a serialization issue?

I stand corrected.. After erasing my userDir and restarting Netbeans 
I changed the default colors, exited and restarted Netbeans. I 
get "cannot open windows due to deserialization" and:

Wed Aug 22 14:50:35 EDT 2001: java.lang.NullPointerException: null
java.lang.NullPointerException
        at org.netbeans.core.windows.WorkspaceImpl.findMode
(WorkspaceImpl.java:401)
        at 
org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.doOpen
(WindowManagerImpl.java:1413)
        at 
org.netbeans.core.windows.WindowManagerImpl$TopComponentManager.open
(WindowManagerImpl.java:1384)
        at org.openide.windows.TopComponent.open
(TopComponent.java:195)
        at org.openide.text.CloneableEditor.open
(CloneableEditor.java:263)
        at org.openide.windows.TopComponent.open
(TopComponent.java:182)
        at 
org.openide.windows.CloneableOpenSupport.openCloneableTopComponent
(CloneableOpenSupport.java:147)
        at org.openide.windows.CloneableOpenSupport$1.run
(CloneableOpenSupport.java:67)
        at java.awt.event.InvocationEvent.dispatch
(InvocationEvent.java:154)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:337)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy
(EventDispatchThread.java:131)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy
(EventDispatchThread.java:98)
        at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:93)
        at java.awt.EventDispatchThread.run
(EventDispatchThread.java:85)

   If you restart Netbeans a _3rd_ time, you get ClassCastException.

Reassigning to editor (due to first exception). The second exception
is another issue (from winsys), please report it separately with
detailed exception. Thanks.

x

I just got the same exception:

Thu Aug 23 15:42:29 CEST 2001: java.lang.ClassCastException: 
org.netbeans.editor.Coloring
java.lang.ClassCastException: org.netbeans.editor.Coloring
        at org.netbeans.editor.EditorUI.getColoring(EditorUI.java:645)
        at 
org.netbeans.editor.ext.ExtCaret.settingsChange(ExtCaret.java:146)
        at 
org.netbeans.editor.BaseCaret.modelChanged(BaseCaret.java:300)
        at 
org.netbeans.editor.ext.ExtCaret.modelChanged(ExtCaret.java:133)
        at 
org.netbeans.editor.BaseCaret.propertyChange(BaseCaret.java:863)
        at 
javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingP
ropertyChangeSupport.java:161)
        at 
javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(SwingP
ropertyChangeSupport.java:130)
        at 
javax.swing.JComponent.firePropertyChange(JComponent.java:3208)
        at 
org.openide.text.QuietEditorPane.firePropertyChange(QuietEditorPane.ja
va:37)
        at 
javax.swing.text.JTextComponent.setDocument(JTextComponent.java:326)
        at javax.swing.JEditorPane.setEditorKit(JEditorPane.java:806)
        at 
org.openide.text.CloneableEditor.initialize(CloneableEditor.java:175)
        at 
org.openide.text.CloneableEditor.<init>(CloneableEditor.java:119)
        at 
org.openide.text.EditorSupport$Editor.<init>(EditorSupport.java:513)
        at 
org.openide.text.EditorSupport$Editor.<init>(EditorSupport.java:505)
        at 
org.netbeans.modules.java.JavaEditor$JavaEditorComponent.<init>(JavaEd
itor.java:940)
        at 
org.netbeans.modules.java.JavaEditor.createJavaEditorComponent(JavaEdi
tor.java:855)
        at 
org.netbeans.modules.java.JavaEditor.createCloneableTopComponent(JavaE
ditor.java:847)
        at 
org.openide.windows.CloneableOpenSupport.openCloneableTopComponent(Clo
neableOpenSupport.java:157)
        at 
org.openide.windows.CloneableOpenSupport$1.run(CloneableOpenSupport.ja
va:67)
        at 
java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:154)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:337)
        at 
java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThr
ead.java:131)
        at 
java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThrea
d.java:98)
        at 
java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
        at 
java.awt.EventDispatchThread.run(EventDispatchThread.java:85)

This is duplicate of issue 14668. I added some debug messages into 
EditorUI.getColoring and it reportes that value which is type casted 
is really org.netbeans.editor.Coloring, but because the EditorUI class 
is loaded by vcscore classloader it does not have access to the 
org.netbeans.editor.Coloring class what results in ClassCastException.

My logs:

* getColoringMap().get(coloringName)=font=null, fontMode=7, 
foreColor=null, backColor=java.awt.Color[r=255,g=255,b=220], 
underlineColor=null, strikeThroughColor=null

* isinstanceof=class org.netbeans.editor.Coloring

* 
classloader=org.netbeans.core.modules.Module$OneModuleClassLoader@5f71
07[org.netbeans.modules.vcscore]


*** This issue has been marked as a duplicate of 14668 ***

Resolved for 3.3.x or earlier, no new info since then -> closing.

Resolved for 3.3.x or earlier, no new info since then -> closing.