I am getting an Exc in ev handl: TypeError: brw is undefined. This only happens in firefox. Chrome or IE is not affected.

When I open or request a page by clicking on a link I get the Exc in ev handl: TypeError: brw is undefined message every time. Until I click on the ok button the page will not open. I also now have to copy and paste page addresses almost every time I open a new firefox page. This is not happening with other browsers.

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.

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Recently, whenever I try to open Firefox, I get a dialog box: Exc in ev handl: TypeError: brw is undefined (JavaScript Application). Firefox is definitely my default browser

Question
Recently, whenever I try to open Firefox, I get a dialog box: Exc in ev handl: TypeError: brw is undefined (JavaScript Application). Firefox is definitely my default browser.
After clicking OK Firefox opens.

Doesn't work out for me either, so I keep it disabled, because it slows down the searches, and it won't stream its additions onto the pages after the first page of search results. Streaming or page zipping allows me to scroll down to the next page of search results without selecting the page number.

Updated to 6.0 and it starts with this error: Exc in ev handl: TypeError: brw is undefined

Just updated to 6.0 and now when I open it it starts with a popup box that says:Exc in ev handl: TypeError: brw is undefined. If I close it it opens a new window with the same popup box. I've tried to re download but the same thing happens. Any ideas?

# Switch back to default theme
# If you are using '''McAfee Site Advisor''', disable it.
# If you are not using '''McAfee Site Advisor''', disable all the extensions and try enabling one by one.

I am getting javascript error message when opeing new window from website Exc in ev handl: TypeError: brw is undefined

when this happens the new window opens but cannot be closed except by using the X in the top right hand corner( there is a "close " link on the web page which seems to be disabled. when the PC is switched of and on again firefox opens all the same winfdows which had been closed when shutting down

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

What does this mean when I try to open a new window "Exc in ev handl: TypeError: brw is undefined

The above message pops up when I click on new window, once I click OK the message goes and a blank new window does appear. It has also just happened when I was in BBC language site and tried to open a link, the message appeared but once I clicked OK the message went and the link did open. It does not happen when I open a new tab. This has only just started to happen over the last few days.

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

When I try to access my bookmarks I get the Exc in ev handl :TypeError this o.Root.enable is a not a function. I havn´t done anything that could give me a clue about this pop-up.

I unistalled and reinstalled Firefox to see if I could get my bookmarks back. But that didn´t work. I still can not access my Marcadores.

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

How do I get tumblr videos to stop showing the "video failed to load" screen, this only happens on firefox and not google chrome

I have tried looking up multiple ways to solve this problem but none have worked

'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* On Windows you can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* On Mac you can open Firefox 4.0+ in Safe Mode by holding the '''option''' key while starting Firefox.
* On Linux you can open Firefox 4.0+ in Safe Mode by quitting Firefox and then going to your Terminal and running: firefox -safe-mode (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
[[Image:FirefoxSafeMode|width=520]]
''Once you get the pop-up, just select "'Start in Safe Mode"''
[[Image:Safe Mode Fx 15 - Win]]
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
Please report back soon.

When i try to run Firefox i get a error message "cannot run unicode version of ATL80.dll install ANSI" this only happens with firefox,internet explorer, Opera and everything else run fine, have re-installed firefox but still the same. run fine.

unicode ATL80.dll error message when trying to run firefox
== This happened ==
Every time Firefox opened
== User Agent ==
Opera/9.80 (Windows NT 5.1; U; en) Presto/2.6.30 Version/10.60

I had this problem as well. I found that somehow the firefox.exe file had been set to run in compatibility mode for Windows 95.
To check this on your system Browse to the firefox folder (C:\Program Files\Mozilla Firefox\) and right click on the file "firefox.exe".
Select "Properties" and then the "Compatibility" tab. Make sure the option "Run this program in compatibility mode for" is UNCHECKED.
Then try running Firefox as normal. Worked for me.
Best of Luck.

I did someting in hotmail using firefox that took away the little paper clip from email and now I can't get any attachments this only happens with firefox

this happened in my hotmail account while using Firefox

Reload the webpage while bypassing the cache using '''one''' of the following steps:
*Hold down the ''Shift'' key and click the ''Reload'' button with a left click.
OR
*Press ''Ctrl'' + ''F5'' or ''Ctrl'' + ''Shift'' + ''R'' (Windows and Linux)
*Press ''Command'' + ''Shift'' + ''R'' (Mac)
Let us know if this solves the issues you are having.

9 times out of 10 I have to force-quit to get out of my g-mail. This only happens only on my i-Mac, never on my Macbook pro. Can anybody help ?

MAX OS X - version 10.7.5 :
For some weeks now, I have to force-quit 9 times out of 10 to get out of my e-mail account (g-mail). This only happens on my i-Mac, never with my other devices (Macbook Pro, i.Phone, i-Pad).
Does anybody know what could be the reason for this ?
Thanks

OK, you have iMovie 08, which is also known is iMovie Version 7.1.4. It has been a few years since i used this version, so this is based on memory.
The only components you must have in the Library/QuickTime folder are the AppleIntermediateCodec.component and the AppleMPEG2Codec.component.
All the others could potentially be causing problems. I would drag the DivX components, the Flip4Mac components, and the Google Camera components to the Desktop temporarily, so nothing is left in this folder except the two Apple components.
Then restart your Mac and start iMovie. If it works, yay!
If you still need these other components for some other app, you can probably get updated DivX components for free at Perian.org.
You can get updated Flip4Mac components by running WMV Player and updating. It should prompt you to update automatically.
I am not sure about the Google components, but if you are running something that needs them, it should prompt you to install the current versions.
If none of that works, post back.

Just recently I am getting the following error message when trying to access web sites. I get a pop up window stating "Exc in ev handl: TypeError: c.location is null" then I have to click ok. It is an issue with some plug-in?

Just recently I am getting the following error message when trying to access web sites. I am using Firefox browser version 10.0.2. I get a pop up window stating "Exc in ev handl: TypeError: c.location is null" as the web site page is being displayed in browser winder. Then I have to click ok. It doesn't matter what web link/site I go to it happens. It is an issue with some plug-in?

I have advised McAfee's product team of the problem and this thread, and they're looking into it now.

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

Why do I get the following msg's on startup start Firefox? (1) Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function; (2) Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function; (3) Exc in ev handl: Error: Bad NPObject as private data!

I get the following msg's. This happening more often, and when I back out to restart it may take a couple of times so that I do not get the error msg's?
Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function
Exc in ev handl: Error: Bad NPObject as private data!

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 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 occasionally get error messages popping up when I run Firefox 7. The messages often say "Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function". does anyone know how to fix this?

After I downloaded and installed the latest version of Firefox, I started getting these error messages every so often when I launched the browser. These messages will usually pop up every third time or so I open the browser and pop up on every page, sometimes multiple times, and I have to clear them away before I can do anything on the page. The message usually reads "Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function". Is there any thing we can do to fix this?

Please see solution in http://kb.mozillazine.org/Problematic_extensions
for "McAfee Site Advisor".
(Windows): For best results you should uninstall '''McAfee Site Advisor''' from Control Panel > add/change programs (Programs and Features). Reboot the system. Then Reinstall from http://www.siteadvisor.com/ and reboot the system. When installing refuse other suggested (crapware) applications.
 Please mark "Solved" one answer that will best help others with a similar problem -- hope this was it.

Why do I get this warning with every new web page: Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function?

Uploaded 6.0.2 and now I get a Java script error message with each new page I access: "Exc in ev handl: TypeError: oSAPlg.oRoot.log is not a function" . Browser is working ok, but this message is a pain. What can I do?

I had this problem for a long, long time. Today I discovered if I went to Tools, Options, Enable Javascript, Advanced and deselected "Hide the Status Bar" the problem went away.
It is worth a try. Worked for me.

I am getting an Exc in ev handl: TypeError: brw is undefined. This only happens in firefox. Chrome or IE is not affected.

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