When installing Office Ultimate 2007 on my Windows Vista Ultimate system, I
get the following setup error message very soon after Setup is launched (and
prior to asking for entry of the key):
"Setup cannot continue because a required file is either corrupted or not
available. run Setup again from original source disc or download location."
I have already tried copying the CD to a system folder and running Setup
from that location. I have also tried running Setup in Windows XP
compatibility mode without success. My system has all updates installed for
Windows Vista Ultimate. I am able to install other programs on this system
from the same DVD/CD drive. And, Setup will launch from the CD on another
system, and gets to the screen that asks for the key entry, so I do not
believe the CD itself is bad.