You never really "quoted" it and it's buried in your post.
Try http://www.google.com/search?num=20&hl=en&lr=&safe=off&q=error+1603+Windows+Installer
Bob
So I have this fancy new Canon digital camera and I can't install the packaged software- which wouldnt be a problem if I hadn't shot in RAW format on my recent trip. Anyway, when I attempt to install the software, the process stops and I am told that a source file can't be found on the installation CD. I know the CD is good because I installed it on a friend's laptop. When I exit the install, I am given error 1603 and refered to Windows Installer Help MSI.CHM. I've done some googling on the subject and haven't come up with anything too helpful. I ran my registry cleaner and my diagnostic program and also came up with nothing. Any help would be appreciated.

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