CDGSX6Update4.exe Fails to Load on Windows 8.1

I am logged in with a.Standard Membership as confirmed by the icon in Corel Draw X6.1. I've tried every way I know to run the 6.4 Update. Regardless of how I initiate the file, i.e. from the dialog after Corel Draw closes or as an administrator from a Web download, I get about 10% of  the way through the installation process; and then I get a dialog box stating that the "Corel Installation Program has stopped working." I click "Close Program" to quit the attempt.

I am running a Dell Inspiron Desktop 3000 Series Model 3847, Intel Core i3-4150 X64 @ 3.5GHz, 8 GB RAM, Windows 8.1. All patches and drivers are up to date. Can anyone suggest a way to get this update to load?