An update to the Windows Vista saga - the owner consented to a fresh install and it has done the trick! It's taken several hours, but the final set of updates are being installed.
I've never been anti-Windows, but I am disappointed by having to reinstall an operating system just to bring it up to date - how could Microsoft change its own update system so that even its own products couldn't use it? Utterly bizarre!
Anyway, if you're suffering from the "Window module installer has stopped working" error message, it seems that the most effective way of recovering from the problem is a fresh install.
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