Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Echekwara usoro a. Biko jụọ ajụjụ ọhụrụ ma ọ bụrụ na ị chọrọ enyemaka.

How do I rectify the error - A new window does not open unless I click 'ok' on the error box which says 'Java Script Application'; What happened:type Error; Components.Classes['@mozilla.org/extensions/manager;1'] is undefined

  • 1 nzaghachinzaghachi
  • 3
  • 2 views
  • Nzaghachi ikpeazụ nke cor-el

starreply
starreply
more options

Whenever I try and open a new firefox window (not ta), or a site automatically opens one, the new window does not open unless I click OK or close the dialog box 'x'

The dialog box has a headinf -Java Script Application and the message is

What happened:type Error; Components.Classes['@mozilla.org/extensions/manager;1'] is undefined

Whenever I try and open a new firefox window (not ta), or a site automatically opens one, the new window does not open unless I click OK or close the dialog box 'x' The dialog box has a headinf -Java Script Application and the message is What happened:type Error; Components.Classes['@mozilla.org/extensions/manager;1'] is undefined

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

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

In Firefox 4 you can use one of these to start in Safe mode:

  • Help > Restart with Add-ons Disabled
  • Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)

See:

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")