No such Interface: Cant remove Security Update KB 891781 in Vista

[Guest]

I purchased Coffee Cup HTML Editor (coffeecup.com) 2 days ago.
The incentive to this purchase was the Visual Editor. I cant use it because
of this Security Update. I have spent hours trying to figure this out.
Coffee Cup has not responded to my call or e-mail and they are closed on
weekends. The only solutions I can find is for XP. The steps are not the
same as Vista and cannot be applied the same. I have done all the obvious
for recommended solutions by checking installed updates. It is not there! I
go to microsoft, keyword search KB891781 and they all seem to apply to
earlier versions (XP, NT, 2000). When I keyword search Vista KB891781, the
message says "Did you mean: vista kb891711", I dont have that in my installed
updates either.
DOES ANYONE KNOW HOW TO REMOVE THIS?

Here is the error message I get:

A recent Microsoft Security Update for the DHTML Editing Component has been
detected.

This Update (KB 891781) causes the Visual Editing portion of the Coffee to
run Improperly

As a result, the Visual Tab will be disabled.

 

[Guest]

Coffee Cup must not be compatible with Vista. That KB article references a
security update for Windows XP that was released almost two years before
Vista.

If this product requires you to not install OS security updates for two
years to use it the product is deeply, fatally flawed. Rather than asking
Coffee Cup to help fix the problem ask them for your money back.