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Firefox crashes when I download the latest Firefox update

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Firefox crashes when I download the latest Firefox update. I get an error message saying "xul.dll was not found"

Firefox crashes when I download the latest Firefox update. I get an error message saying "xul.dll was not found"

Additional System Details

Installed Plug-ins

  • -Office Plugin for Netscape Navigator
  • 1.9.0009.1
  • 6.0.12.732
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealJukebox Netscape Plugin
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape "9.3.3"
  • Default Plug-in
  • Shockwave Flash 10.0 r45
  • iTunes Detector Plug-in
  • GEPlugin
  • 4.0.50524.0
  • NPWLPG
  • Windows Presentation Foundation (WPF) plug-in for Mozilla browsers
  • Google Updater pluginhttp://pack.google.com/
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Google Update
  • Java Plug-in 1.6.0_11 for Netscape Navigator (DLL Helper)
  • Java(TM) Platform SE binary

Application

  • User Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-GB; rv:1.9.2.7) Gecko/20100713 Firefox/3.6.7 ( .NET CLR 3.5.30729)

More Information

Name
Version
Enabled
ID
AVG Safe Search 9.0.0.845 true {3f963a5b-e555-4543-90e2-c3908898db71}
AVG Security Toolbar 4.504.019.002 true avg@igeared
Microsoft .NET Framework Assistant 1.2.1 true {20a82645-c095-46ed-80e3-08825760534b}
Adblock Plus 1.2.1 true
RealPlayer Browser Record Plugin 1.1.3 true

cor-el
  • Top 10 Contributor
  • Moderator
17481 solutions 157964 answers

Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop. Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer. It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.

You can skip the step to create a new profile, that is not necessary for this issue. ..... See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop. Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer. It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling. You can skip the step to create a new profile, that is not necessary for this issue. ..... See http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall