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800736B2 ERROR_SXS_INVALID_ACTCTXDATA_FORMAT
The application binding data format is invalid.

You could try running the Update Readiness Tool to see if that
resolves the error:
Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, for Windows Server 2008 R2 Release Candidate, and for Windows 7 Release Candidate

If no joy, suggest running the System File Checker:
How to repair the operating system and how to restore the operating system configuration to an earlier point in time in Windows Vista

Other then that, MS offers no charge for installation and
compatibility issues associated with Security updates:
MS08-069: Description of the security update for XML Core Services 6.0: November 11, 2008