Dimly believing that the useless shower of incompetent cretins at Microsoft would have fixed this well-documented problem long before now, I decided to let Windows Updates loose on my newly-acquired Win7 (Ultimate) x64 Dell laptop, today. Guess what? It got hosed - big time. Exactly the same error that users have been reporting since SP1 was first released.
My one wish in life now is to vivisect that wretch Gates and any of his employees stupid enough to get in the way.