TypeError: aUrl is undefined
TypeError: aUrl is undefined chrome://browser/content/urlbarBindings.xml
It points to the following code:
<method name="_parseActionUrl"> <parameter name="aUrl"/> <body><![CDATA[ if (!aUrl.startsWith("moz-action:")) return null; // url is in the format moz-action:ACTION,PARAM let [, action, param] = aUrl.match(/^moz-action:([^,]+),(.*)$/); return {type: action, param: param}; ]]></body> </method>
What might cause this error?
I get it on startup, and later (SOMETIMES) just moving the focus from the Urlbar and back again initiates another error.
If I start Fx in a safe mode from a regular mode, it happens as well.
If, however, I start Fx in a safe mode from a safe mode it doesn’t happen.
Thank you.
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The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.
To Reset Firefox do the following:
- Go to Firefox > Help > Troubleshooting Information.
- Click the "Reset Firefox" button.
- Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
- Firefox will open with all factory defaults applied.
Further information can be found in the Refresh Firefox - reset add-ons and settings article.
Did this fix your problems? Please report back to us!
Thank you.
It happens with a new profile as well.
You can check for problems with the places.sqlite database file in the Firefox Profile Folder.
- http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
- https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file
Create a new profile as a test to check if your current profile is causing the problems.
See "Creating a profile":
- https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
- http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer some files from an existing profile to the new profile, but be careful not to copy corrupted files.
Thank you.
It happens with a new profile as well.
Try a clean reinstall and delete the Firefox program folder before reinstalling a fresh copy of Firefox.
Download a fresh Firefox copy and save the file to the desktop.
- Firefox 18.0.x: http://www.mozilla.org/en-US/firefox/all.html
Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
- Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will also lose your personal data like bookmarks and passwords from profiles of other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded 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.
- (32 bit Windows) C:\Program Files\Mozilla Firefox\
- (64 bit Windows) C:\Program Files (x86)\Mozilla Firefox\
- http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other profile data are stored in the Firefox Profile Folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
Thank you.
I’ve done that and unfortunately it didn’t help. I only get the error on Win 7 (not on Win xp).