This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

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

sidebar for bookmarks not working, error message: TypeError: mainWindow.document.getElementById("sidebarclose-button") is null

  • 3 ردود
  • 7 have this problem
  • 3 views
  • آخر ردّ كتبه cor-el

more options

Every time I try to open my bookmarks in side bar, it opens, shuts and gives me this error message: TypeError: '''''mainWindow.document.getElementById("sidebarclose-button") is null'''''

This did not happen before the upgrade!!!!

Every time I try to open my bookmarks in side bar, it opens, shuts and gives me this error message: TypeError: ''''''''''mainWindow.document.getElementById("sidebarclose-button") is null'''''''''' This did not happen before the upgrade!!!!

All Replies (3)

more options

Try the Firefox SafeMode to see how it works there.
A troubleshooting mode, which disables most Add-ons.
(If you're not using it, switch to the Default Theme.)

  • You can open the Firefox 4/5/6/7 SafeMode by holding the Shft key when you use the Firefox desktop or Start menu shortcut.
  • Or use the Help menu item, click on Restart with Add-ons Disabled... while Firefox is running.

Don't select anything right now, just use "Continue in SafeMode."

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before using the Firefox shortcut (without the Shft key) to open it again.

If it is good in the Firefox SafeMode, your problem is probably caused by an extension, and you need to figure out which one.
http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes

more options

It works fine for the downloads and yoono, but still getting same error message when I hit the bookmarks button!! Thank you so much for looking into it for me