We're going on a trip tomorrow so I needed to get my iPod setup quickly and sync'ed beforehand. However, I hadn't put iTunes on my new Vista 64-bit system, and I was shocked to see the iTunes installer fail to install saying "cannot find Quicktime." A little file system sniffing solved the problem.
Since both apps are 32-bit apps running on 64-bit Vista, they are each installed to "c:\program files (x86)." Apparently iTunes has hardcoded "c:\program files" so iTunesSetup goes looking for QuickTime in "c:\program files\quicktime" rather that where it really ended up.
So, before I ran iTunesSetup again, I needed to "lie" to the installed by making a directory link to where QuickTime actually got installed.
Ridiculous that I should have to do this. Apple really doesn't make it easy on Windows users. Heh, I wonder why not? :)
UPDATE: Nick has a good writeup on this issue with more detail, so check it out!
Scott Hanselman is a former professor, former Chief Architect in finance, now speaker, consultant, father, diabetic, and Microsoft employee. I am a failed stand-up comic, a cornrower, and a book author.
Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.