Created an attachment (id=85068) [details]
stacktrace

This issue already has 6 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Seems to be a valid issue, reproducible testcase required.

Build: NetBeans IDE 6.7 (Build 200906241340)
VM: Java HotSpot(TM) Client VM, 14.0-b16, Java(TM) SE Runtime Environment,
1.6.0_14-b08
OS: Windows XP, 5.1, x86

User Comments: 
Bringing up the help interface from the replace in projects window

Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:0)
        at javax.swing.text.BoxView.replace(BoxView.java:0)
        at javax.swing.text.View.updateChildren(View.java:0)
        at javax.swing.text.View.changedUpdate(View.java:0)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:0)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:0)

Created an attachment (id=85386) [details]
stacktrace

This issue already has 7 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

This issue already has 8 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Build: NetBeans IDE 6.7 (Build 200906241340)
VM: Java HotSpot(TM) Client VM, 11.3-b02, Java(TM) SE Runtime Environment,
1.6.0_13-b03
OS: Linux, 2.6.24-24-generic, i386

User Comments: 
random exception

Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:170)
        at javax.swing.text.BoxView.replace(BoxView.java:164)
        at javax.swing.text.View.updateChildren(View.java:1095)
        at javax.swing.text.View.changedUpdate(View.java:761)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:324)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1618)

Created an attachment (id=86232) [details]
stacktrace

This issue already has 9 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Build: NetBeans IDE 6.7 (Build 200906241340)
VM: Java HotSpot(TM) Client VM, 11.0-b15, Java(TM) SE Runtime Environment,
1.6.0_10-b33
OS: Windows XP, 5.1, x86

User Comments: 


Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:170)
        at javax.swing.text.BoxView.replace(BoxView.java:164)
        at javax.swing.text.View.updateChildren(View.java:1095)
        at javax.swing.text.View.changedUpdate(View.java:761)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:324)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1618)

Created an attachment (id=87083) [details]
stacktrace

This issue already has 11 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Build: NetBeans IDE Dev (Build jet-main-1201-on-090908)
VM: Java HotSpot(TM) Client VM, 11.0-b16, Java(TM) SE Runtime Environment,
1.6.0_11-b03
OS: Linux, 2.6.28-11-generic, i386

User Comments: 


Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:170)
        at javax.swing.text.BoxView.replace(BoxView.java:164)
        at javax.swing.text.View.updateChildren(View.java:1095)
        at javax.swing.text.View.changedUpdate(View.java:761)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:324)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1618)

Created an attachment (id=87626) [details]
stacktrace

This issue already has 12 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Build: NetBeans IDE Dev (Build 200909221401)
VM: Java HotSpot(TM) Client VM, 14.2-b01, Java(TM) SE Runtime Environment,
1.6.0_16-b01
OS: Linux, 2.6.28-15-generic, i386

User Comments: 


Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:170)
        at javax.swing.text.BoxView.replace(BoxView.java:164)
        at javax.swing.text.View.updateChildren(View.java:1095)
        at javax.swing.text.View.changedUpdate(View.java:761)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:324)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1618)

Created an attachment (id=88237) [details]
stacktrace

Build: NetBeans IDE Dev (Build 200909221401)
VM: Java HotSpot(TM) Client VM, 14.2-b01, Java(TM) SE Runtime Environment,
1.6.0_16-b01
OS: Linux, 2.6.28-15-generic, i386

User Comments: 
Openning Help Content dialog

Stacktrace: 
java.lang.ArrayIndexOutOfBoundsException: 2
        at javax.swing.text.CompositeView.replace(CompositeView.java:170)
        at javax.swing.text.BoxView.replace(BoxView.java:164)
        at javax.swing.text.View.updateChildren(View.java:1095)
        at javax.swing.text.View.changedUpdate(View.java:761)
        at javax.swing.text.html.BlockView.changedUpdate(BlockView.java:324)
        at
javax.swing.plaf.basic.BasicTextUI$RootView.changedUpdate(BasicTextUI.java:1618)

Created an attachment (id=88376) [details]
stacktrace

Unfortunately, I can't reproduce this random exception.

All the attached stack traces explain only that the issue is inside the Swing
code when JEditorPane tries to read an
HTML document , but it doesn't contain any pointers to the NetBeans code where
the issue might be fixed.

It is unclear which Document (i.e HTMLDocument) are used by the JEditorPane
during reading to model the issue. Seems the
issue doesn't depend on InputStream (i.e. a page URL).

BTW there is a chance that the issue occurs against newly initialized
HTMLDocument(see the method
JEditorPane.initializeModel(EditorKit kit, URL page) ). If so then it is a bug
in either the Swing or the Java platform,
probably in the method HTMLDocument$HTMLReader.adjustEndElement() when
added/removed model for HTML elements is
generated to be fired as an event of the changed update.
Of course, there is another scenario for this issue - broken added/removed
model can be generated if there are uncaught
errors during reading the HTML file, e.g. as consequences of incorrect
buffering or translation for a given encoding.

Hence, we need have more info about the issue and its environmental conditions.

This issue already has 23 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

The statistical info (23 episodes) can't give us a chance to select common
scenario to reproduce this issue. The exception has random nature. We need have
intensive testing around this issue or wait some occasional info from our
users. Another way is an investigation of changes in the code of the NetBeans
that have been made before the first episode. All these approaches are
extremely time-consuming.

I'll continue work in this area, but my opinion is the existing time frame up
to the NB6.8 release is not enough to find a cause of this issue and fix it. 

I'll highly appreciate any ideas about possible solutions for this issue.

This issue already has 24 duplicates 
see http://statistics.netbeans.org/exceptions/detail.do?id=150368

Probably, this bug has a relation to the bug 176078