Windows Installer in Server Platform

[xlfdll]

A question:

To Windows Installer, what is the difference between the one in Client Version of Windows and in Server Version of Windows?

(mainly installing and configing behaviors)

Because, I have a 3rd party modded driver use this to install, but both Server 2003 & Server 2008, it prompted like "Cannot find the file".

In Client Version of Windows, it works.

The installer is a exe file, with a "bootwrapper".

I noticed, in Client Version of Windows, the installer will create a temp MSI file named like "3e6cc3.msi" in %temp%, a copy of the extracted MSI file from the installer exe.

(I guess the installer binary runs this temp copy)

But no creation in Server Version.

Who can explain this?