Well, I tried extracting the standalone update and the associated cab file, and even ran a manual install on the XML file using pkgmgr. Here are the only error entries in the extended log created using that method:
2009-10-23 09:32:08, Error DISM DISM Package Manager: PID=4824 Failed to get the underlying CBS Feature - CDISMPackage::OpenFeature(hr:0x800f080c)
2009-10-23 09:32:08, Error DISM DISM Package Manager: PID=4824 Feature name Windows6.1-KB974431-x64.xml is unknown. - CPackageManagerCLIHandler::Private_GetFeaturesFromCommandLine(hr:0x800f080c)
2009-10-23 09:32:08, Error DISM DISM Package Manager: PID=4824 Unknown features were specified on the command-line. - CPackageManagerCLIHandler::Private_GetFeaturesFromCommandLine(hr:0x800f080c)
2009-10-23 09:32:08, Error DISM DISM Package Manager: PID=4824 Failed to get the Feature List from the command line. - CPackageManagerCLIHandler::Private_ProcessFeatureChange(hr:0x800f080c)
2009-10-23 09:32:08, Error DISM DISM Package Manager: PID=4824 Failed while processing command enable-feature. - CPackageManagerCLIHandler::ExecuteCmdLine(hr:0x800f080c)
Anyone have any ideas? I believe I read that this update encompasses several other updates, does anyone know what the individual updates are? Perhaps I can install them individually? This is driving me crazy, everything I have read indicates that this is a fairly important update.