See http://blogs.msdn.com/ie/archive/200...and-xpsp3.aspx and
http://blogs.msdn.com/ie/archive/200...-8-beta-2.aspx

PS: The fact that you've got identical threads running in IE General and IE
Beta newsgroups is not helping matters, Tom. Stick with one (1) thread,
please.


Tom Stuart wrote:
> I followed numerous leads in your suggestions. So much so I now can't
> tell you which of the leads solved my problem. In any case I thank you
> and my solution was:
>
> I had installed IE8B before XP SP3. I figured this had something to do
> with my problem with IE8B. I tried a couple of ways to uninstall XP SP3
> without success. Your leads help me to a command that got the
> unistaller going. Once removed I have had no problems with IE8B or
> Chrome. So problem solved.
>
> You might tell me now however, what do I do in regard to SP3 ... ignore
> it an suppose that Windows Update will install all the patches in good
> time?
>
> Thanks again for get things going again.
>
> Regards
>
> Tom
>
> "Don Varnau" <don_04[at]varnau[dot]org> wrote in message
> news:#28q65hDJHA.528@TK2MSFTNGP06.phx.gbl:
>
>> Hi,
>> If SP3 was installed after IE8 beta, you will have to remove SP3 before
>> uninstalling IE8.
>> See: IEBlog- IE and Windows XP Service Pack 3
>> http://blogs.msdn.com/ie/archive/200...and-xpsp3.aspx
>>
>> Before you uninstall either SP3 or IE8, a third-party program is probably
>> causing the error.
>> Start IE7 without add-ons from:
>> Right-click the IE icon on the desktop. Choose Start without add-ons.
>> or
>> Programs> Accessories> System tools> Internet Explorer (no add-ons)
>>
>> If the problem goes away, you have an incompatible browser add-on
>> installed. See: http://www.enhanceie.com/ie/troubleshoot.asp
>> for troubleshooting information.
>> More at:
>> IEBlog Troubleshooting and Internet Explorer's (No Add-ons) Mode:
>> http://blogs.msdn.com/ie/archive/2006/07/25/678113.aspx
>> - - -
>> The troublesome program may not be a browser add-on.
>> See: 936214- How to troubleshoot compatibility problems that affect IE7
>> in
>> Windows Vista:
>> http://support.microsoft.com/kb/936214 (Also applies to XP)
>>
>> Hope this helps,
>> Don
>> [MS MVP- IE]
>>
>> "Tom Stuart" <tom@uniting.com.au> wrote in message
>> news:uH8VrshDJHA.3392@TK2MSFTNGP03.phx.gbl...
>>> I upgraded to IE8beta. I also installed SP3. Since then I've been
>>> getting the following error when attempting to start IE8beta:
>>> ---------------
>>> iexplore.exe - Application Error
>>> The instruction at "0x5a913420" referenced memory at "0x5a913420". The
>>> memory could not be "written".
>>> Click on OK to terminate the program
>>> Click on CANCEL to debug the program
>>> ----------------
>>> When I try to uninstall IE8BETA I get a message saying it cannot be
>>> uninstalled. When I try to install IE7 over the top I get told that I
>>> can't install it since there is a later version already installed.
>>>
>>> Firefox works okay. However I tried the new Google Chrome to see if it
>>> works and it gives the exact same error apart from the iexplore.exe is
>>> chrome.exe.
>>>
>>> I'd be glad of any help with this problem.
>>>
>>> Regards
>>>
>>> Tom