Thank you, Dr. Document. That was clear from reading the thread. I was just pointing out that rather than each user seeking a solution himself, a few strategically placed messages would make sense.
Specifically ---
- The update package now says it is recommended for all Macs running Mountain Lion. At the moment that isn't true. It could list systems which are not currently ready, saving people the time and frustration of downloading and then having the install fail with a cryptic message about the volume on which the installation is to be installed.
- The iPhoto update that now appears in the app store requires 10.8.2, and will not install. It erroneously says that the OS X update appears on the Update tab, which as of now it does not. For users who cannot currently install 10.8.2, the iPhoto update should also be pulled to avoid the conflicting instructions.
- The app store Update page would be an ideal place to display a message describing the situation while a fix is pending.
I don't think anyone would mind waiting a while for this to be fixed. It's the lack of information in the right time and place that's so irritating, and totally avoidable with just a small effort.