When Installing MooGUI you get Missing file : INSTMSIA.EXE or INSTMSIW.EXE


The version of Microsoft's Installer (MSI) agent on your PC is out of 
date. Please use one of the links below to download and install the MSI 
version that is appropriate for your PC. You should have no problem 
installing MooGUI after installing the new MSI.


To download the Windows Installer file from the Web, visit one of the 
following Microsoft Web sites:


Instmsia.exe for Windows 98 or Windows Millennium Edition:
http://download.microsoft.com/download/WindowsInstaller/Install/2.0/W9XMe/EN-US/InstMsiA.exe


-or-


Instmsiw.exe for Windows NT, Windows 2000 or Windows XP:
http://download.microsoft.com/download/WindowsInstaller/Install/2.0/NT45/EN-US/InstMsiW.exe
