This error indicates that either the .CAB files inside the package are
corrupt, or the local system's Cryptographic service is misconfigured in
some way.
Have you tried the DirectX Web Installer? This should ensure the problem is
not due to corrupt files, unless you are actually having hardware failures
(like a bad hard disk) causing this problem.
http://www.microsoft.com/downloads/d...displaylang=en
--
Chuck Walbourn
SDE, XNA Developer Connection
This posting is provided "AS IS" with no warranties, and confers no rights.