Defender will not install

[Guest]

I downloaded Beta 2 Antispyware OK but when I try to install it I get an
error stating that the MsiInstaller needs repair. How do i fix it?

 

[Black Baptist]

=?Utf-8?B?cm9uYXRoZnM=?= rambled on in
microsoft.public.windowsxp.help_and_support:

I downloaded Beta 2 Antispyware OK but when I try to install it I get an
error stating that the MsiInstaller needs repair. How do i fix it?

Update MSI Installer
http://www.microsoft.com/downloads/details.aspx?FamilyId=5FBC5470-B259-4733-
A914-A956122E08E8&displaylang=en