I just installed some of the apps in the CS4 Master Collection, and when I run the updater, 2 of the apps fail to update.
Of the apps in the suite, I installed Acrobat, Dreamweaver, Photoshop & Illustrator. Plus their auto selected dependencies.
When the updater runs, it fails at Extension Manager & Flash Lite for Device Central.
What happens with the first one- the Extension Manager failure, is that the progress bar moves, then snaps back an inch, then moves forward an inch & snaps back again- and this repeats for about a half an hour until it times out & provides a dialog which allows me to choose to skip the update & install the remaining ones.
The second one- the Flash Lite for Device Central failure progress bar does the same thing, only at a different position further along the box. Its dialog only gives me the option to stop installing & quit, not to continue installing the remaining updates. I guess because it happens at the end of the update process.