Haha! I have this issue as well, though it was via Ccleaner that I
caused the problem.
Went to clean PC, and uninstalled the Vista uninstaller via Ccleaner. I
saw a green V named uninstaller under tools in Ccleaner. Figuring this
was spyware I uninstalled that "uninstaller"
Turns out I uninstalled the Vista uninstaller. No clue as to why MS
made the uninstaller uninstallable. Ccleaner picked it up, and me never
ever even thinking anything bad could happen from uninstalling something
named uninstaller ended up now always having to use Ccleaner. Albeit
with a lot more care haha
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b12blib