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I get error message every time firefox starts: xmlNode.getElementsByTagName("id")[0].firstChild is null - 2

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  • 47 have this problem
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  • Last reply by cor-el

ratmouth
ratmouth
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About two weeks ago I started getting this error message every time I started up Firefox: xmlNode.getElementsByTagName("id")[0].firstChild is null - 2.

I uninstalled and reinstalled Firefox, but the error continues. Then I did a System restore to several months ago, but the error continues. It doesn't happen with any other program.

Does anyone know how to get rid of it. If it has anything to do with the registry, I'll just have to let it be and switch to a different browser.

About two weeks ago I started getting this error message every time I started up Firefox: xmlNode.getElementsByTagName("id")[0].firstChild is null - 2. I uninstalled and reinstalled Firefox, but the error continues. Then I did a System restore to several months ago, but the error continues. It doesn't happen with any other program. Does anyone know how to get rid of it. If it has anything to do with the registry, I'll just have to let it be and switch to a different browser.

Chosen solution

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

If it does work in Safe-mode then disable all your 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")

See also http://kb.mozillazine.org/Standard_diagnostic_-_Firefox (Extension_issues, Profile_issues)

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cor-el
cor-el
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  • Top 10 Contributor
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Chosen Solution

Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).

  • Don't make any changes on the Safe mode start window.

See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems

If it does work in Safe-mode then disable all your 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")

See also http://kb.mozillazine.org/Standard_diagnostic_-_Firefox (Extension_issues, Profile_issues)