WinFX Sept CTP And Vista 5231

WinFX Sept CTP Will Not Install on Vista 5231 - ANSWER

"The WinFX Sept CTP will not install on 5231 rendering this build of Vista ... Rob Ralyea on the Avalon team that this build doesn't and will not have a matching WinFX version. The great news is that “we have since fixed this problem, so all future Windows Vista public releases will include WinFX with it.” Thank you! "

Thank god.