Get popup, JavaScript Application Exc in evhandl: Typeerror: ths,oroot,enable is not a function

<blockquote>Locking duplicate thread. 
Please continue here: [[/questions/882493]]</blockquote>
I get the bove error, when I try to opn Firefox, or any web page from firefox.

Exc in ev handl: TypeError: this.oRoot.enable is not a function" i also faced this problm bt thanks to u .....its eliminated by doing my site advisor disabled.thanks a lot

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I am getting a javascript error on startup "Exc in ev handl: TypeError:this.oRoot.enable is not a function"

When I start Firefox, I get an error box labeled [JavaScript Application] with the message "Exc in ev handl: TypeError: this.oRoot.enable is not a function"
I then need to click the OK button before Firefox will start.

This issue can be caused by the McAfee Site Advisor extension
*https://community.mcafee.com/message/203466
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Get error: "[Java Script Application] Exc in ev handl: TypeError: this.oRoot.enable is not a function"--huh?

This error is received a LOT (but not every time) when I try to select a link. This only started happening in the last few days. It's always received when I'm initially signing on. If I hit cancel or okay (there's only one option, I forget right now the exact wording) USUALLY the action then proceeds as I'd expect. But sometimes I'm presented with an incomplete web page.

Exc in ev handl: TypeError: this.oRoot.enable is not a function" i also faced this problm bt thanks to u .....its eliminated by doing my site advisor disabled.thanks a lot

Other than moving to Version 4 or 5, neither of which support Java which I need, is there a way to fix the "Exc in ev handl: TypeError: this.oRoot.enable is not a function" bug I am getting in version 3.6.23?

I have used Version 4 and 5 and unfortunately neither supports Java functions that I require. I like the look and feel of 3.6.23 but there seems to be a script error on startup of Mozilla. When I double click the Icon to open the program I get "'''Exc in ev handl: TypeError: this.oRoot.enable is not a function'''" and so far haven't been able to locate the code line to fix it. I would rather not reverse Engineer the program.

This issue can be caused by the McAfee Site Advisor extension
*https://community.mcafee.com/message/203466
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Exc in ev handl: TypeError: this.oRoot.enable is not a function This is popping up when I befor I open my browser,in a pop up box under the heading JAVA SCRIPT EXE. What is it, how do I get rid of it?

TypeError: this.oRoot.enable is not a function
This is popping up when I befor I open my browser,in a pop up box under the heading JAVA SCRIPT EXE. What is it, how do I get rid of it?

I did it in my computer, but I can not uninstall the Site Advisor alone. I need to uninstsll the the total McAfee plus. What should I do?
But another user in my computer they do not have this problem. If I try to use IE or Chrome etc , I can not find this problem. I use firefox since 2006 and do not want to change another one. What should I do?
By the way I have this problem after I update Firefox6 3 weeks ago and always allow 1 plugin work. The other user in this computer they just allow firefox plugin working 1 times.
It will pop out if I disable the siteadivsor.
many thanks

No longer able to add bookmarks on Yahoo Toolbar, Error message: "Exc in ev handl: TypeError: this.oRoot.enable is not a function" started when I updated to Firefox 6.0

Since updating to Firefox 6.0 I am no longer able to add bookmarks on Yahoo Toolbarl. I receive the following Java Error message: "Exc in ev handl: TypeError: this.oRoot.enable is not a function." When I hit the OK button in the error message it opens up "Add a Bookmark" and when I attempt to add the bookmark there I get this error message: "A problem occured while trying to save the bookmark. Please try again later."
Is this a comparability issue that you are not aware of? Below are the versions of Firefox and Yahoo Toolbar that I currently have installed:
Firefox: 6.0.02
Yahoo Toolbar: 2.4.0.20110815110908
Windows XP, Service Pack 3
I am having this issue on my laptop and desktop. Since I use both computers the Yahoo toolbar has been great for having my bookmarks available on both computers at the same time but no I don't have that feature. I'm told that Google's toolbar also doesn't work either.
Do you guys do any testing or Quality Assurance testing before releasing these versions?

Add-ons are the responsibility of their authors. McAfee does not even put their extension on http://addons.mozilla.org you had to install it from their site.
Disable "McAfee Site Advisor" extension which was just updated to 3.4.0, which probably took it out of the addons block list.
* "Ctrl+Shift+A" > find McAfee Site Advisor and use "Disable", and then restart Firefox.
* Do a Google Search no problem
* It seems that if you re-enable Site Advisor again, and restart Firefox you are okay. At least you know where to look if you get the error again or Google searches slow down.

The following keeps popping up before firefox will load, Exc in ev handl: TypeError: this.oRoot.enable is not a function

There is a pop up box, it says,"Exc in ev handl: TypeError: this.oRoot.enable is not a function" It pops up before Firefox will load, what is it?

Disable "McAfee Site Advisor" extension which was just updated to 3.4.0, which probably took it out of the addons block list.
* "Ctrl+Shift+A" > find McAfee Site Advisor and use "Disable", and then restart Firefox.
* Do a Google Search no problem
* It seems that if you re-enable Site Advisor again, and restart Firefox you are okay. At least you know where to look if you get the error again or Google searches slow down.

When I try to start Firefox I receive this message: "Exc in ev handl: TypeError: this oRoot.enable is not a function" What's wrong?

When I try to start Firefox I receive this message: "Exc in ev handl: TypeError: this oRoot.enable is not a function" Once I close the error message Firefox starts up immediately.

This issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

How can I cure/stop this error message on startup 'Exc in ev handle: TypeError: this.oRoot.enable is not a function'

When starting Firefox 8.0, I get a '[JavaScript Application]' dialogue box with the above error message. When I click OK in dialogue box, Firefox then appears to start normally.
What could be the cause, and how do I go about curing it?

Duplicate - [https://support.mozilla.com/en-US/questions/896648 questions/896648]

How can I cure/stop this error message on startup 'Exc in ev handl: TypeError: this.oRoot.enable is not a function'

When starting Firefox 8.0, I get the above JavaScript Application error. When I click 'OK' in dialogue box, Firefox appears to start normally.
What could be the cause, and how can I cure it?

This issue can be caused by the McAfee Site Advisor extension
* https://community.mcafee.com/message/203466
Start Firefox in Safe Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
Don't make any changes on the Safe mode start window.
* https://support.mozilla.com/kb/Safe+Mode
* https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

When I start Firefox I get this error: [JavaScript Application] Exc in ev handl: TypeError: this.oRoot.enable is not a function. How can I fix this?

This problem started suddenly, and I need to close the error message window so Firefox Browser can start.
I have the latest JavaScript version.

Start Firefox in [[Safe Mode]] to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

When I open Firefox, I get a window telling me "[Javascript Application] Exc in ev handl: TypeError: this.oRoot.enable is not a function". When I click ok, Firefox opens normally

All details in question. I can provide a copy of an image of the window if needed

Tried disabling all add-ins individually, problem still there. But when I restart via help menu / restart with add-ons disabled, the problem goes away. I do have mcafee installed but the site advisor has been disabled for ages.

Whenever I want to open Firefox or a new window in Firefox, the following error message appears: [JavaScript Application] Exc in ev handl: TypeError: this.oRoot.enable is not a function. How can I solve this?

A little window with the error message pops up each time I wnat to open Firefox or if Firefox wants to open a window. I have to click the OK button and then Firefox opens. This is annoying.

That problem is caused by McAfee Site Advisor
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

I keep getting this Exc in ev handl: TypeError: this.oRoot.enable is not a function; how do I fix this, i have re-installed this twice. are you offering a patch or anything?

After I installed an update yesterday, I keep getting the above error notice, do you have a patch?

That problem is probably caused by McAfee Site Advisor
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Error code when firefox starts= Exc in ev handl: TypeError: this.oRoot.enable is not a function. And when Firefox starts up it has a "problem loading page" and can't find any servers. Explorer works, so I know it's not my network connection.

this all happened after updating to the latest version of mozilla firefox. I have a Dell XP400 if that makes a difference.

That issue can be caused by the McAfee Site Advisor extension
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

Get popup, JavaScript Application Exc in evhandl: Typeerror: ths,oroot,enable is not a function

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