Unable to install Microsoft Security Bulletin MS08-070 for Microsoft Visual Studio .NET 2003 Service Pack 1

My customer was trying to install the Microsoft Security Bulletin MS08-070 for Microsoft Visual Studio .NET 2003 Service Pack 1 (KB958393) from the following link

https://www.microsoft.com/downloads/details.aspx?familyid=6AC7CF8F-D046-43A8-B4EF-253153D65AED&displaylang=en

But I noticed that the installation always failed with the following error message

Error: The upgrade patch cannot be installed by the Windows Installer service because the program to be upgraded may be missing, or the upgrade patch may update a different version of the program. Verify that the program to be upgraded exists on your computer and that you have the correct upgrade patch.

OBSERVATIONS:

I looked at the error log file and saw the following information

C:\WINDOWS\Installer\a5c4b.msi

MSI (c) (E4:D4) [10:32:06:039]: Product: Visual Studio .NET Enterprise Architect 2003 - English - Update '{92D7F8DA-74AA-4E0C-9903-44E9529CEC76}' could not be installed. Error code 1642. Additional information is available in the log file C:\test.log.

MSI (c) (E4:D4) [10:32:06:039]: Product: Visual Studio .NET Enterprise Architect 2003 - English -- Installation failed.

SOLUTION:

I re-installed VS 2003 SP1 that allowed the patch to be installed properly. However I had SP1 for VS 2003 installed already on this machine. I am unsure why the issue occurred and I am investigating further what caused the issue.