If SP3 was installed after IE8 beta, you will have to remove SP3 before
See: IEBlog- IE and Windows XP Service Pack 3
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.
Programs> Accessories> System tools> Internet Explorer (no add-ons)
If the problem goes away, you have an incompatible browser add-on installed.
for troubleshooting information.
IEBlog Troubleshooting and Internet Explorer’s (No Add-ons) Mode:
- - -
The troublesome program may not be a browser add-on.
See: 936214- How to troubleshoot compatibility problems that affect IE7 in
(Also applies to XP)
Hope this helps,
[MS MVP- IE]
"Tom Stuart" <email@example.com> wrote in message
> 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
> I'd be glad of any help with this problem.