Hi cambridgemist,
Thanks for posting your response.
Here is a KBarticle involving the error you are receiving - http://support.microsoft.com/kb/959894
The article discusses running the Malicious Software Removal Tool and Verifying the necessary services are configured correctly.
I want include a link to information provided on another community post involving this same issue. If the above article does not help in resolving the issue, please refer to this POST for further steps. (Kudos - goes to Michael Murphy involving the Community forum response to the error received. )
Here is the link; http://social.answers.microsoft.com/Forums/en-US/vistawu/thread/d5d9550e-1668-425f-aea0-9ac7abcd6693
Please let us know if this assists you or if further suggestions are needed.
Kind regards,
Debbie
Microsoft Answers Support Engineer
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