For the past couple of days, in firefox (version 12.0), whenever I open Firefox or a new window (but not a new tab), I get a dialog box: “[JavaScript Application] TypeError: Components.classes[TvtPwmComponent_CID] is undefined” Help!
![]() |
There are isolated problems with current patches, but they are well-known and documented on this site. |
SIGN IN | Not a member? | REGISTER | PLUS MEMBERSHIP |
-
Firefox problem
Home » Forums » AskWoody support » Questions: Browsers and desktop software » Other browsers » Firefox problem
- This topic has 5 replies, 3 voices, and was last updated 13 years ago.
AuthorTopicCarl Perelli-minetti
AskWoody PlusMay 24, 2012 at 8:30 am #483422Viewing 3 reply threadsAuthorReplies-
Carl Perelli-minetti
AskWoody Plus -
Clive Pugh
Member -
WSXircal
AskWoody LoungerMay 31, 2012 at 6:10 am #1334764Please do the following.
-
[*]If you have the layout with the orange oblong button, hit ALT to toggle the text links on.
[*]Click “Help”, then “Restart with add-ons disabled”.
[*]Confirm by clicking “Restart” and then in the next menu, click the button called “Continue in Safe Mode” without checkmarking any of the boxes.When Firefox restarts, all your add-ons will be disabled. Do whatever you normally do that gives you the error. If Firefox doesn’t produce one, then one of your add-ons is the culprit.
What you have to do next is follow the same procedure and then when you get the menu, checkmark the top box called “Disable all add-ons”. Then click the button at the bottom which says “Make changes and restart”.
After that, it’s just a case of re-enabling them one by one until the problem recurs. Then you’ll know which one is the culprit.
Here’s a list of problematical extensions just in case you have one of them: Firefox Problematical Extensions
-
Carl Perelli-minetti
AskWoody Plus
-
-
WSXircal
AskWoody LoungerJune 1, 2012 at 2:33 am #1334814You can use this add-on instead: LastPass Password Manager
Anyway, glad to hear you found the troublemaker.
Viewing 3 reply threads -

Plus Membership
Donations from Plus members keep this site going. You can identify the people who support AskWoody by the Plus badge on their avatars.
AskWoody Plus members not only get access to all of the contents of this site -- including Susan Bradley's frequently updated Patch Watch listing -- they also receive weekly AskWoody Plus Newsletters (formerly Windows Secrets Newsletter) and AskWoody Plus Alerts, emails when there are important breaking developments.
Get Plus!
Welcome to our unique respite from the madness.
It's easy to post questions about Windows 11, Windows 10, Win8.1, Win7, Surface, Office, or browse through our Forums. Post anonymously or register for greater privileges. Keep it civil, please: Decorous Lounge rules strictly enforced. Questions? Contact Customer Support.
Search Newsletters
Search Forums
View the Forum
Search for Topics
Recent Topics
-
My Simple Word 2010 Macro Is Not Working (Awaiting moderation)
by
mbennett555
5 hours, 12 minutes ago -
Office gets current release
by
Susan Bradley
9 hours, 55 minutes ago -
FBI: Still Using One of These Old Routers? It’s Vulnerable to Hackers
by
Alex5723
1 day, 2 hours ago -
Windows AI Local Only no NPU required!
by
RetiredGeek
10 hours, 58 minutes ago -
Stop the OneDrive defaults
by
CWBillow
1 day, 3 hours ago -
Windows 11 Insider Preview build 27868 released to Canary
by
joep517
1 day, 13 hours ago -
X Suspends Encrypted DMs
by
Alex5723
1 day, 15 hours ago -
WSJ : My Robot and Me AI generated movie
by
Alex5723
1 day, 15 hours ago -
Botnet hacks 9,000+ ASUS routers to add persistent SSH backdoor
by
Alex5723
1 day, 16 hours ago -
OpenAI model sabotages shutdown code
by
Cybertooth
1 day, 16 hours ago -
Backup and access old e-mails after company e-mail address is terminated
by
M W Leijendekker
1 day, 5 hours ago -
Enabling Secureboot
by
ITguy
1 day, 12 hours ago -
Windows hosting exposes additional bugs
by
Susan Bradley
2 days ago -
No more rounded corners??
by
CWBillow
1 day, 20 hours ago -
Android 15 and IPV6
by
Win7and10
1 day, 10 hours ago -
KB5058405 might fail to install with recovery error 0xc0000098 in ACPI.sys
by
Susan Bradley
2 days, 13 hours ago -
T-Mobile’s T-Life App has a “Screen Recording Tool” Turned on
by
Alex5723
2 days, 15 hours ago -
Windows 11 Insider Preview Build 26100.4202 (24H2) released to Release Preview
by
joep517
2 days, 10 hours ago -
Windows Update orchestration platform to update all software
by
Alex5723
2 days, 23 hours ago -
May preview updates
by
Susan Bradley
2 days, 10 hours ago -
Microsoft releases KB5061977 Windows 11 24H2, Server 2025 emergency out of band
by
Alex5723
2 days, 2 hours ago -
Just got this pop-up page while browsing
by
Alex5723
2 days, 15 hours ago -
KB5058379 / KB 5061768 Failures
by
crown
2 days, 12 hours ago -
Windows 10 23H2 Good to Update to ?
by
jkitc
1 day, 14 hours ago -
At last – installation of 24H2
by
Botswana12
3 days, 14 hours ago -
MS-DEFCON 4: As good as it gets
by
Susan Bradley
12 hours, 27 minutes ago -
RyTuneX optimize Windows 10/11 tool
by
Alex5723
4 days, 2 hours ago -
Can I just update from Win11 22H2 to 23H2?
by
Dave Easley
2 days, 1 hour ago -
Limited account permission error related to Windows Update
by
gtd12345
4 days, 16 hours ago -
Another test post
by
gtd12345
4 days, 16 hours ago
Recent blog posts
Key Links
Want to Advertise in the free newsletter? How about a gift subscription in honor of a birthday? Send an email to sb@askwoody.com to ask how.
Mastodon profile for DefConPatch
Mastodon profile for AskWoody
Home • About • FAQ • Posts & Privacy • Forums • My Account
Register • Free Newsletter • Plus Membership • Gift Certificates • MS-DEFCON Alerts
Copyright ©2004-2025 by AskWoody Tech LLC. All Rights Reserved.