Every time I start Firefox I get : JavaScript Application TypeError: Components.classes[cid] is undefined. What causes this and how do I fix it?

This happens also when I open another tab that requires printing.

Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
* Don't make any changes on the Safe mode start window.
See:
* [[Troubleshooting extensions and themes]]

Similar Messages

  • Getting error message when starting Firefox. Msg as follows: TypeError: Components.classes[cid] is undefined (using on Windows 7) Help?

    Getting the following error message when I start Firefox. ''TypeError: Components.classes[cid] is undefined''
    Do not know where to go to fix this. Running my laptop on Windows 7.

    This issue can be caused by an extension that isn't working properly.
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Upgraded to FF4, Have windows 7, everytime I click on FF4 to go online, I get pop-up box with error message [Javascript: application] Typeerror: Components.classes[cid] is undefined...when I click OK it lets me online but this is a pain

    I get an error message... [Javascript: application] upper left corner in the pop-up box, then in the body of the pop-up box it says, Typeerror: Components.classes[cid] is undefined...when I click OK it lets me online but this is a pain, also, I get the same message when I try to open another window while using FF4...Thanks and hope you can help...

    Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
    * Don't make any changes on the Safe mode start window.
    See:
    * [[Troubleshooting extensions and themes]]

  • When I start Firefox, Iget the following message "TypeError: Components.classes[cid] is undefined"

    TypeError: Components.classes[cid] is undefined. This is the message thast pops up every time I start Firefox.

    This issue can be caused by an extension that isn't working properly.
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode

  • When i log in to firefox i get the message TypeError: Components.classes[cid] is undefined do you know how to get rid of it

    this only started after i reinstalled google toolbar

    This issue can be caused by an add-on that isn't working properly.
    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    * Don't make any changes on the Safe mode start window.
    * https://support.mozilla.com/kb/Safe+Mode
    * https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Every time I request firefox an error box comes up, {JavaScript Application} TypeError: Components.classes[cid] is undefined

    Is this an error in FireFox or JavaScript

    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    * Don't make any changes on the Safe mode start window.
    * https://support.mozilla.com/kb/Safe+Mode
    * https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Cannot print from webpages. JavaScript Application TypeError: Components.classes [cid] is undefined message appears everytime I start Firefox. How do I fix this? Thanks!

    I wanted to install the Google toolbar extension, so I installed Add-on Compatibility Reporter 0.9.2. Then I installed the Google toolbar extension. When I restarted my computer I got this message. The Google toolbar did not work, so I disabled it thinking that would correct the problem. How can I get back the ability to print webpages. Thanks

    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Since upgrading to 4.01, I get an error message: [JavaScript Application] TypeError: Components. classes [cid] is undefined.

    I seem to have screwed up my Firefox, I guess. Whenever I go out of Firefox and try to come back in, I get that message, I click on OK and everything is fine again until I close our Firefox and try to return... What's the problem?

    Usually caused by an incompatible extension.
    http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

  • I install compatibility reporter in my Mozilla firefox 5 running under Windows 7 and get message - TypeError: Components.classes[cid] is undefined, what is causing it please?

    I am having to install Compatibility reporter so that Google toolbars will work. This used to be ok, but now I am getting the message-TypeError: Components.classes[cid] is undefined. I am running under Windows 7 any idea how |I can get round it please?

    If you force an extension to install by overriding the compatibility then the result can be unpredicted.<br />
    The extension may work or may not work or cause error messages like you posted.<br />
    You always need to be careful with forcing extensions to install.
    You may need to check extensions.checkCompatibility prefs on the <b>about:config</b> page.
    * http://kb.mozillazine.org/extensions.checkCompatibility

  • Recently downloaded Firefox 4. Now when loading it, I get this Java Console Message: TypeError: Components.classes[cid] is undefined I click OK and everything works OK, but this didn't happen before.

    Please tell me how I can get rid of a Java Console Msg. every time I load Firefox 4 (which I just updated to). This box pops up when trying to load Firefox: TypeError: Components.classes[cid] is undefined. I have to click on OK before it will load. ANNOYING. This didn't happen until I updated to Firefox 4.

    That indicates that you have an add-on that is not compatible with Firefox 4. To find out which one, use the procedure in this link - https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Upon startup i get error msg: TypeError: Components.classes[cid] is undefined

    win7 ultimate, ff4, when opening via shortcut or task-bar I get an error message first, "TypeError: Components.classes[cid] is undefined", click ok and ff loads and runs just fine, i have uninstalled ff and reinstalled twice. problem still exists

    This is probably due to an incompatible add-on. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • By opening Firefox I get since recently the message: [JavaScript-toepassing] TypeError: Components.classes[cid] is undefined

    After clicking [OK] in the Error-message Firefox runs without problems. It seems to be only annoying.

    Start Firefox in <u>[[Safe Mode]]</u> to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
    *Don't make any changes on the Safe mode start window.
    *https://support.mozilla.com/kb/Safe+Mode
    *https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

  • Error code: [JavaScript Application] TypeError: Components.classes[componentid] is undefined.

    I get this error when starting Firefox, or when opening a new window. When I close Firefox, or close the new window, I get a different error message: [JavaScript Application] ReferenceError: m_caFxTBobj is not defined

    Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
    * Don't make any changes on the Safe mode start window.
    See:
    * [[Troubleshooting extensions and themes]]
    * [[Troubleshooting plugins]]
    If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
    * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
    * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
    If you haven't done yet then you should create a new profile exclusively for the 4.0 beta version and create a desktop shortcut with -P "profile" appended to the target to launch that profile.
    * http://kb.mozillazine.org/Testing_pre-release_versions
    * http://kb.mozillazine.org/Creating_a_new_Firefox_profile_on_Windows
    * http://kb.mozillazine.org/Shortcut_to_a_specific_profile
    * http://kb.mozillazine.org/Using_multiple_profiles_-_Firefox

  • Every time when i open firefox this shows up Components.classes[cid] is undefined. what is this?

    can't explain any more

    Probably caused by an incompatible extension that you have installed. You need to figure out which one is throwing that error and disable it until the developer of that extension fixes it.
    http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

  • Getting "TypeError:components.classes(cid)is undefined. Is this Firefox error?

    I only get this error when loading Firefox 5. I have re installed 5, to no avail. What is the fix for this.
    Gary

    See this thread: https://support.mozilla.com/en-US/questions/672099

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