Ticket #751 (closed defect: worksforme)

Last modified 8 months ago

When selecting an item in the Elements List, with Firefox, NVDA produces an error

Reported by:	elliott94	Owned by:
Priority:	major	Milestone:	near-term
Component:	Browse mode	Version:	development
Keywords:	NVDA, Elements List, Web pages, Firefox, Error	Cc:
Operating system:		Blocked by:
Blocking:

Description (last modified by elliott94) (diff)

Sometimes, when selecting an element such as a link from the Elements list, the error sound that NVDA produces can be heard, and the action isn't completed. I'm using snapshot 3695, and the latest stable version of Firefox. Log is attached.

Change History

comment:1 Changed 19 months ago by jteh

Status changed from new to closed
Resolution set to duplicate

Does this happen often? It should only ever occur if the page you were looking at when you activated the elements list disappears; e.g. you alt+tabbed and changed to a different page or the page refreshes. In this case, this is a duplicate of #589. Closing as such for now; please reopen if this is really frequent and provide example web sites.

comment:2 Changed 19 months ago by elliott94

Status changed from closed to reopened
Keywords Firefox, Error added; Firefox removed
Resolution duplicate deleted

Unfortunately I can't provide you with a list of websites; it's totaly random.
I can asure you, however, that the pages haven't refreshed at all since I've brought up the Elements list. This happens when reading my mail through the GMail interface, but as I said, for the most part it's totaly random.

comment:3 follow-up: ↓ 4 Changed 19 months ago by jteh

Is the final line of the error (about the null context handle) always the same? If so, this definitely indicates that the document has disappeared since you activated the elements list. Otherwise, maybe there's a different error in other cases that we need to see. How often do you see this? Also, does this happen in 2010.1?

comment:4 in reply to: ↑ 3 Changed 19 months ago by elliott94

Sorry, I missed that in my previous reply.
No, this doesn't happen at all in 2010.1, which suggests that something has changed that causes thsi issue in a later snapshot.
Replying to jteh
:

comment:5 Changed 19 months ago by elliott94

Keywords Error, Typing, Form Fields added; Error removed

I'm not sure if this is related at all, but I've also encountered errors when typing text into a form on a web page. I've pasted my log below, hope it's of some help.
Cheers.

INFO - nvda (21:48:46):
Starting NVDA
INFO - core.main (21:48:47):
Config dir: C:\Documents and Settings\Barnsey\Application Data\nvda
INFO - config.save (21:48:48):
Configuration saved
INFO - core.main (21:48:48):
NVDA version main-3593
INFO - core.main (21:48:48):
Using Windows version (5, 1, 2600, 2, 'Service Pack 3')
INFO - core.main (21:48:48):
Using Python version 2.6.5 (r265:79096, Mar 19 2010, 21:48:26) [MSC v.1500 32 bit (Intel)]
INFO - core.main (21:48:48):
Using comtypes version 0.6.2
INFO - synthDriverHandler.setSynth (21:48:56):
Loaded synthDriver eloquence
INFO - core.main (21:48:56):
Using wx version 2.8.10.1 (msw-unicode)
INFO - braille.initialize (21:48:56):
Using liblouis version 1.8.0
INFO - braille.BrailleHandler?.setDisplayByName (21:48:56):
Loaded braille display driver noBraille
WARNING - core.main (21:49:12):
UIA not available
INFO - core.main (21:49:12):
NVDA initialized
ERROR - eventHandler.executeEvent (08:27:27):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:27):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:28):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:28):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:28):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:29):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:29):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:30):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:30):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:30):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:31):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:31):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:31):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:32):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (08:27:33):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x0450F270> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
DEBUGWARNING - eventHandler.executeEvent (09:02:14):
error executing event: gainFocus on <NVDAObjects.IAccessible.mozilla.Mozilla object at 0x04523FB0> with extra args of {}
Traceback (most recent call last):

COMError: (-2147418110, 'Call was canceled by the message filter.', (None, None, None, 0, None))
DEBUGWARNING - eventHandler.executeEvent (09:19:14):
error executing event: gainFocus on <NVDAObjects.IAccessible.mozilla.Mozilla object at 0x023DB050> with extra args of {}
Traceback (most recent call last):

COMError: (-2147418110, 'Call was canceled by the message filter.', (None, None, None, 0, None))
ERROR - unhandled exception (10:55:32):
Traceback (most recent call last):

WindowsError?: [Error 1775] A null context handle was passed from the client to the host during a remote procedure call
ERROR - unhandled exception (13:05:01):
Traceback (most recent call last):

WindowsError?: [Error 1775] A null context handle was passed from the client to the host during a remote procedure call
ERROR - eventHandler.executeEvent (13:05:11):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:11):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:12):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:12):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:12):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:13):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:14):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:14):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:14):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:14):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:14):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:15):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x023DB670> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:29):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:30):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:30):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:31):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:32):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:35):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:35):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:35):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:35):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:35):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:36):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:36):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:36):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:36):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:37):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:38):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'
ERROR - eventHandler.executeEvent (13:05:38):
error executing event: caret on <NVDAObjects.Dynamic_EditableTextWithAutoSelectDetectionMozillaIAccessible object at 0x044F2570> with extra args of {}
Traceback (most recent call last):

AttributeError?: 'Dynamic_EditableTextWithAutoSelectDetectionMozilla' object has no attribute 'hasContentChangedSinceLastSelection'

comment:6 Changed 19 months ago by jteh

You didn't answer my question above:

The hasContentChangedSinceLastSelection error is unrelated, but FYI, it was fixed in changeset:main,3610.

comment:7 Changed 17 months ago by jteh

Status changed from reopened to closed
Resolution set to worksforme
Milestone 2010.2 deleted

No response from reporter in several weeks and I still can't reproduce this. Please reopen if the problem persists.

comment:8 Changed 17 months ago by elliott94

Status changed from closed to reopened
Resolution worksforme deleted
Operating system Windows XP deleted
Milestone set to 2010.2

Sorry for the long delay; I forgot about this ticket.
Unfortunately, this error can still be encountered on both my netbook running XP Home, and on my PC running Win 7 Home Premium 64-bit.
Even if I wait for a couple of minutes to ensure that a page has finished loading, when selecting for example a link in the Elements List, I get the error.
However, if I then bring the list back up, nine times out of ten that same link will activate.

comment:9 follow-up: ↓ 10 Changed 17 months ago by jteh

Milestone changed from 2010.2 to 2010.3

No developer (and possibly no other user) can reproduce this at present, so it's going to have to wait until someone can. I've really tried quite hard to reproduce this; I use NVDA constantly on the web. I know this sucks for you and I'm sorry, but there's really nothing we can do about this until someone with development knowledge can reproduce the issue and figure out what's going on.

I'll ask the same question for the third time:

Are you only seeing this in the elements list now? The ticket summary mentions just navigating on a web page as well.

Please set your log level to debug (NVDA menu -> Preferences -> General settings) and reproduce the issue. Attach that log to this ticket.

comment:10 in reply to: ↑ 9 Changed 17 months ago by elliott94

Keywords Error added; Error, Typing, Form Fields removed
Description modified (diff)
Summary changed from When navigating through a website using Firefox or by selecting an item in the Elements List, NVDA produces an error to When selecting an item in the Elements List, with Firefox, NVDA produces an error

Replying to jteh:

Sure, that's understandable.

I'm not sure; I've only managed to remember to send the log that once.

Only in the Elements List now, yep.

Done, will attach log when issue comes up again. :)

I'm actually beginning to wonder if this is a regression; I can't recall seeing it in 2010.1 at all.

comment:11 follow-up: ↓ 12 Changed 17 months ago by jteh

Are you using braille by any chance? If so, do you have braille tethering set to review?

comment:12 in reply to: ↑ 11 Changed 17 months ago by elliott94

Replying to jteh:

No, unfortunately not.

However, a couple of minutes ago I was fortunately able to re-produce this error.
I've decided not to attach the log; it's about 2 MB, but I've pasted all text from when I activated the Elements List, hopefully this info will help somewhat.

IO - keyboardHandler.internal_keyDownEvent (22:18:05):
key press: nvda+f7
DEBUGWARNING - core.newCpbDel (22:18:05):
COM pointer <POINTER(IAccessibleText) ptr=0x1ef2b4 at 23e11c0> already deleted
DEBUGWARNING - core.newCpbDel (22:18:05):
COM pointer <POINTER(IAccessible2) ptr=0x221c3c at 23e1b20> already deleted
DEBUGWARNING - core.newCpbDel (22:18:05):
COM pointer <POINTER(IAccessibleAction) ptr=0x1fe834 at 23e1940> already deleted
DEBUGWARNING - watchdog._watcher (22:18:05):
Trying to recover from freeze, core stack:

IO - speech.speakText (22:18:06):
Speaking u'Elements List dialog'
IO - speech.speakText (22:18:06):
Speaking u'tree view'
IO - speech.speakText (22:18:06):
Speaking u'Homepage 1 of 162'
IO - keyboardHandler.internal_keyDownEvent (22:18:06):
key press: shift+.
IO - speech.speakText (22:18:06):
Speaking u'> 68 of 162'
IO - keyboardHandler.internal_keyDownEvent (22:18:06):
key press: extendedup
IO - speech.speakText (22:18:06):
Speaking u'41 67 of 162'
IO - keyboardHandler.internal_keyDownEvent (22:18:07):
key press: return
ERROR - unhandled exception (22:18:07):
Traceback (most recent call last):

WindowsError?: [Error 1775] A null context handle was passed from the client to the host during a remote procedure call
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:18:07):
IAccessible2::windowHandle failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:18:07):
Resorting to WindowFromPoint? on accLocation
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:18:07):
accLocation failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.DynamicNVDAObjectType.call (22:18:07):
Invalid NVDAObject: Can't get a window handle from IAccessible
Stack trace:

DEBUGWARNING - watchdog._watcher (22:18:07):
Trying to recover from freeze, core stack:

DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:18:07):
IAccessible2::windowHandle failed: (-2147418110, 'Call was canceled by the message filter.', (None, None, None, 0, None))
DEBUG - treeInterceptorHandler.update (22:18:08):
Adding new treeInterceptor to runningTable: <virtualBuffers.gecko_ia2.Gecko_ia2 object at 0x0240D370>
IO - speech.speakText (22:18:08):
Speaking u'Downloads - Banter - Unofficialmills.co.uk - Mozilla Firefox'
IO - speech.speakText (22:18:08):
Speaking u'Downloads - Banter - Unofficialmills.co.uk document'
IO - speech.speakText (22:18:08):
Speaking u'Downloads - Banter - Unofficialmills.co.uk'
DEBUG - queueHandler.registerGeneratorObject (22:18:08):
Adding generator 25
IO - speech.speakText (22:18:08):
Speaking u'Unofficial Mills | Geek World'
IO - speech.speakText (22:18:08):
Speaking u'listwith 5 items visited link Homepage'
IO - speech.speakText (22:18:08):
Speaking u'visited link Show Clips'
IO - speech.speakText (22:18:08):
Speaking u'visited link Podcast Archive'
IO - speech.speakText (22:18:08):
Speaking u'link YouTube? Channel'
IO - speech.speakText (22:18:08):
Speaking u'link Message Boards'
IO - speech.speakText (22:18:08):
Speaking u'out of list [Ad: Unofficial Mills]'
IO - speech.speakText (22:18:08):
Speaking u'link graphic Go Back'
IO - speech.speakText (22:18:08):
Speaking None
IO - speech.speakText (22:18:08):
Speaking u'link Alt+Shift+1 Unofficialmills.co.uk'
IO - speech.speakText (22:18:08):
Speaking u' > '
IO - keyboardHandler.internal_keyDownEvent (22:18:14):
key press: nvda+n
IO - speech.speakText (22:18:14):
Speaking u'\n'
IO - speech.speakText (22:18:14):
Speaking u'NVDA menu'
IO - keyboardHandler.internal_keyDownEvent (22:18:14):
key press: extendeddown
IO - speech.speakText (22:18:14):
Speaking u'Preferences subMenu p'
IO - keyboardHandler.internal_keyDownEvent (22:18:15):
key press: extendeddown
IO - speech.speakText (22:18:15):
Speaking u'Tools subMenu t'
IO - keyboardHandler.internal_keyDownEvent (22:18:15):
key press: extendedright
IO - speech.speakText (22:18:15):
Speaking u'View log v 1 of 3'
IO - keyboardHandler.internal_keyDownEvent (22:18:16):
key press: return

comment:13 Changed 17 months ago by elliott94

Looks like I've got another error.

What's interesting about this one is that the first time I activate the Elements list their are 162 elements, but the second time only 156 ...

IO - keyboardHandler.internal_keyDownEvent (22:06:12):
key press: nvda+f7
DEBUGWARNING - watchdog._watcher (22:06:13):
Trying to recover from freeze, core stack:

IO - speech.speakText (22:06:14):
Speaking u'Elements List dialog'
IO - speech.speakText (22:06:14):
Speaking u'tree view'
IO - speech.speakText (22:06:14):
Speaking u'British Broadcasting CorporationBBCHome 1 of 162'
IO - speech.speakText (22:06:14):
Speaking u'Normal cursor'
IO - keyboardHandler.internal_keyDownEvent (22:06:16):
key press: s
IO - speech.speakText (22:06:16):
Speaking u'Skip to content 3 of 162'
IO - keyboardHandler.internal_keyDownEvent (22:06:16):
key press: c
IO - speech.speakText (22:06:16):
Speaking u'Schedule 17 of 162'
IO - keyboardHandler.internal_keyDownEvent (22:06:17):
key press: return
ERROR - unhandled exception (22:06:17):
Traceback (most recent call last):

WindowsError?: [Error 1775] A null context handle was passed from the client to the host during a remote procedure call
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:17):
IAccessible2::windowHandle failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:17):
Resorting to WindowFromPoint? on accLocation
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:17):
accLocation failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.DynamicNVDAObjectType.call (22:06:17):
Invalid NVDAObject: Can't get a window handle from IAccessible
Stack trace:

DEBUGWARNING - watchdog._watcher (22:06:18):
Trying to recover from freeze, core stack:

DEBUG - treeInterceptorHandler.update (22:06:19):
Adding new treeInterceptor to runningTable: <virtualBuffers.gecko_ia2.Gecko_ia2 object at 0x046D0DB0>
IO - speech.speakText (22:06:19):
Speaking u'BBC - Radio 1 - Mozilla Firefox'
IO - speech.speakText (22:06:19):
Speaking u'BBC - Radio 1 document'
IO - speech.speakText (22:06:19):
Speaking u'BBC - Radio 1'
DEBUG - queueHandler.registerGeneratorObject (22:06:19):
Adding generator 90
IO - speech.speakText (22:06:19):
Speaking u'clickable navigation landmark visited link British Broadcasting Corporation'
IO - speech.speakText (22:06:19):
Speaking u'visited link graphic BBC'
IO - speech.speakText (22:06:19):
Speaking u'visited link Home'
IO - speech.speakText (22:06:19):
Speaking u'Accessibility links'
IO - speech.speakText (22:06:19):
Speaking u'listwith 7 items clickable link Text only'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Skip to content'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Skip to local navigation'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Skip to bbc.co.uk navigation'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Skip to bbc.co.uk search'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Help'
IO - speech.speakText (22:06:19):
Speaking u'clickable link Accessibility Help'
IO - keyboardHandler.internal_keyDownEvent (22:06:20):
key press: nvda+f7
DEBUGWARNING - watchdog._watcher (22:06:20):
Trying to recover from freeze, core stack:

IO - speech.speakText (22:06:21):
Speaking u'Elements List dialog'
IO - speech.speakText (22:06:21):
Speaking u'tree view'
IO - speech.speakText (22:06:21):
Speaking u'British Broadcasting CorporationBBCHome 1 of 155'
IO - keyboardHandler.internal_keyDownEvent (22:06:21):
key press: s
IO - speech.speakText (22:06:21):
Speaking u'Skip to content 3 of 155'
IO - keyboardHandler.internal_keyDownEvent (22:06:21):
key press: c
IO - speech.speakText (22:06:21):
Speaking u'Schedule 17 of 155'
IO - keyboardHandler.internal_keyDownEvent (22:06:36):
key press: escape
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:36):
IAccessible2::windowHandle failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:36):
Resorting to WindowFromPoint? on accLocation
DEBUGWARNING - NVDAObjects.IAccessible.IAccessible.init (22:06:36):
accLocation failed: (-2147467259, 'Unspecified error', (None, None, None, 0, None))
DEBUGWARNING - NVDAObjects.DynamicNVDAObjectType.call (22:06:36):
Invalid NVDAObject: Can't get a window handle from IAccessible
Stack trace:

DEBUGWARNING - watchdog._watcher (22:06:37):
Trying to recover from freeze, core stack:

IO - speech.speakText (22:06:37):
Speaking u'BBC - Radio 1 - Mozilla Firefox'
IO - speech.speakText (22:06:37):
Speaking u'BBC - Radio 1 document'
IO - speech.speakText (22:06:37):
Speaking u'out of list visited link British Broadcasting Corporation'
IO - keyboardHandler.internal_keyDownEvent (22:06:38):
key press: nvda+n
IO - speech.speakText (22:06:38):
Speaking u'\n'
IO - speech.speakText (22:06:38):
Speaking u'NVDA menu'
IO - keyboardHandler.internal_keyDownEvent (22:06:39):
key press: extendeddown
IO - speech.speakText (22:06:39):
Speaking u'Preferences subMenu p'
IO - keyboardHandler.internal_keyDownEvent (22:06:39):
key press: extendeddown
IO - speech.speakText (22:06:39):
Speaking u'Tools subMenu t'
IO - keyboardHandler.internal_keyDownEvent (22:06:40):
key press: extendeddown
IO - speech.speakText (22:06:40):
Speaking u'Help subMenu h'
IO - keyboardHandler.internal_keyDownEvent (22:06:40):
key press: extendedup
IO - speech.speakText (22:06:40):
Speaking u'Tools subMenu t'
IO - keyboardHandler.internal_keyDownEvent (22:06:41):
key press: extendedright
IO - speech.speakText (22:06:41):
Speaking u'View log v 1 of 3'
IO - keyboardHandler.internal_keyDownEvent (22:06:41):
key press: return
DEBUGWARNING - watchdog._watcher (22:06:42):
Trying to recover from freeze, core stack:

comment:14 Changed 17 months ago by jteh

Technical: It looks like watchdog is killing off calls made by the virtual buffer's isAlive property, making it report that the buffer is dead and thus killing off the buffer. The log seems a bit out of order though. I need ot add some logging for when buffers die.

Elliott, have you tried this in a snapshot since main rev 3807 or perhaps in 2010.2beta1? I made a change in changeset:main,3807 which might at least improve this.

comment:15 follow-up: ↓ 17 Changed 15 months ago by jteh

I added logging for virtual buffer death. Please try this again with a recent main snapshot and provide a debug log if the problem persists.

comment:16 Changed 14 months ago by jteh

Milestone changed from 2011.1 to near-term

comment:17 in reply to: ↑ 15 Changed 14 months ago by elliott94

Replying to jteh:

Will do. I haven't actually seen this problem in a while; it was mostly encountered on my netbook which currently has a dead hard drive, however when I get that fixed I'll see if I can reproduce.

comment:18 Changed 8 months ago by jteh

Status changed from reopened to closed
Resolution set to worksforme

Nothing from reporter in months and I can't reproduce.

Note: See TracTickets for help on using tickets.

Context Navigation

← Previous Ticket
Next Ticket →

Download in other formats: