(just logging the bug)

Using j2sdk1.4.2_6

On right click -> show javadoc I receive the 
following error:

*********** Exception occurred ************ at 
3:10 PM on Oct 21, 2004
Annotation: Exception during initialization of 
HTML browser module
java.lang.IllegalStateException: Duplicate pair 
in treePair1: SL[/Browsers/SwingBrowser pair2: SL
[/Browsers/SwingBrowser index1: 6 index2: 6 
item1: org.netbeans.core.ui.SwingBrowser@1c93f91 
item2: org.netbeans.core.ui.SwingBrowser@1c93f91 
id1: 16c50af id2: 25452e
	at 
org.openide.util.lookup.ALPairComparator.compare
(ALPairComparator.java:52)
	at java.util.TreeMap.compare
(TreeMap.java:1085)
	at java.util.TreeMap.put(TreeMap.java:463)
	at java.util.TreeSet.add(TreeSet.java:209)
	at 
org.openide.util.lookup.AbstractLookup$R.initItems
(AbstractLookup.java:788)
	at 
org.openide.util.lookup.AbstractLookup$R.allItemsW
ithoutBeforeLookup(AbstractLookup.java:749)
	at 
org.openide.util.lookup.AbstractLookup$R.allInstan
ces(AbstractLookup.java:691)
	at 
org.openide.util.lookup.ProxyLookup$R.computeResul
t(ProxyLookup.java:378)
	at 
org.openide.util.lookup.ProxyLookup$R.allInstances
(ProxyLookup.java:329)
	at 
org.openide.util.lookup.ProxyLookup$R.computeResul
t(ProxyLookup.java:378)
	at 
org.openide.util.lookup.ProxyLookup$R.allInstances
(ProxyLookup.java:329)
	at 
org.openide.awt.HtmlBrowser.findComponent
(HtmlBrowser.java:226)
[catch] at org.openide.awt.HtmlBrowser.<init>
(HtmlBrowser.java:173)
	at 
org.netbeans.core.HtmlBrowserComponent.<init>
(HtmlBrowserComponent.java:83)
	at 
org.netbeans.core.NbTopManager$NbBrowser.<init>
(NbTopManager.java:613)
	at org.netbeans.core.NbTopManager$1.run
(NbTopManager.java:328)
	at java.awt.event.InvocationEvent.dispatch
(InvocationEvent.java:178)
	at java.awt.EventQueue.dispatchEvent
(EventQueue.java:454)
	at 
java.awt.EventDispatchThread.pumpOneEventForHierar
chy(EventDispatchThread.java:201)
	at 
java.awt.EventDispatchThread.pumpEventsForHierarch
y(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run
(EventDispatchThread.java:100)
*********** Exception occurred ************ at 
3:10 PM on Oct 21, 2004
java.lang.NullPointerException
	at org.openide.awt.HtmlBrowser.<init>
(HtmlBrowser.java:205)
	at 
org.netbeans.core.HtmlBrowserComponent.<init>
(HtmlBrowserComponent.java:83)
	at 
org.netbeans.core.NbTopManager$NbBrowser.<init>
(NbTopManager.java:613)
	at org.netbeans.core.NbTopManager$1.run
(NbTopManager.java:328)
	at java.awt.event.InvocationEvent.dispatch
(InvocationEvent.java:178)
	at java.awt.EventQueue.dispatchEvent
(EventQueue.java:454)
[catch] at 
java.awt.EventDispatchThread.pumpOneEventForHierar
chy(EventDispatchThread.java:201)
	at 
java.awt.EventDispatchThread.pumpEventsForHierarch
y(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents
(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run
(EventDispatchThread.java:100)