Thanks Mark, it worked like a charm. The program author said he had not heard
of the problem before and suggested it was probably caused by a spam blocker,
etc.

"Mark L. Ferguson" wrote:

> You could try running the setup for the app in Compatibility Mode. Create a
> shortcut to the exe that runs setup, and set the Properties of that shortcut
> to use XP compat. mode.
>
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> Mark L. Ferguson
> .
>
> "bob_c" <bobc@discussions.microsoft.com> wrote in message
> news:8A456183-4AAA-420A-A069-41EFB918CE2C@microsoft.com...
> > An application program fails to install with Vista. The first error
> > message
> > is "set an association" and the file identified appears to be:
> > _INSO432_MP. I
> > can't find any extension like this in the Default Programs listing.
> > I also get Setup Error message 105 which I cannot find any information
> > about.
> > And, I get a message: ISSET_SE caused a General Protection Fault.
> > The program installs OK on an Xp computer.
> >
> >