Robin and Robert, Thank you, thank you. Disabling the addons in the manner
you noted did fix the error when closing IE7. I am not sure what was
disabled, because when I go into Tools>Manage Addons now I do not see
anything disabled that I had not already disabled, and so far the ones I
normally use seem to work.

Robin, after fixing the IE7 closing error and following your method, I
installed KB927891-v3-x86-ENU.exe which appeared to install fine. Next I
followed your examples for installing the MU update. This did not work. I
still get the same error. I did not try installing it via safe mode yet, but
will give it a try tonight after work. I will let you know how that goes.

Again, thank you both for your time. I relish not having that error box show
up every time I close IE7 !

"Robert Aldwinckle" wrote:

> (cross-post added to IE NG)
> "DCL" <DCL@discussions.microsoft.com> wrote in message
> news:917EED85-357C-451A-B9BB-60DD9E269566@microsoft.com
> ....
> > Every time I close IE7 I get an error saying: "The instruction at 0x43666454
> > referenced at 0x00000148 could not be read."
>
> Interpreting the crash "address" as ASCII yields: CfdT
> It could be a coincidence but I suspect it represents stack corruption.
> Depending on the byte order it was stored by it may be seen
> as a permutation of those letters elsewhere in a dump. Etc.
>
> Usually we guess that this is a symptom of interference by third-party
> programs and with IE7 suggest that you try running first with No Add-ons
> e.g. Run... iexplore.exe -nohome -extoff and see if closing that
> causes the symptom. Then try being selective about which Add-ons
> you leave enabled in order to figure out which one might be the problem
> cause. Etc.
>
> Good luck
>
> Robert Aldwinckle