Can't install Service Pack 1

Windows update works except when I try to install Service Pack 1. I don't seem to have any other problems other than this. Thanks in advance, Carl My checksur file is as follows:

Checking System Update Readiness.
Binary Version 6.1.7601.21645
Package Version 12.0
2011-07-31 19:43
Checking Windows Servicing Packages
Checking Package Manifests and Catalogs
Checking Package Watchlist
Checking Component Watchlist
Checking Packages
(f) CBS Registry Error 0x00000002 Package_for_KB975467_RTM~31bf356ad364e35~amd64~~6.1.1.0 Microsoft\Windows\CurrentVersion\Component Based Servicing\Packages\ Failed to open store sub key
Checking Component Store
Summary:
Seconds executed: 513
Found 1 errors
CBS Registry Error Total count: 1

Registry Error 0x00000002 Package_for_KB975467 was mentioned in your checksur file.

I suggest you read through the link below carefully -

Article ID: 975467 - Last Review: June 10, 2011 - Revision: 1.2
MS09-059: Vulnerability in the Local Security Authority Subsystem Service could allow denial of service


FYI.

How to obtain support for Service Pack 1

Support for Windows 7 Service Pack 1

Consumer end-users can use Microsoft Answers to discuss issues that concern Windows 7 SP1. To do this, visit the following Microsoft website: Home - Microsoft Answers

IT professionals can use the Windows 7 IT pro forum to discuss issues that concern Windows 7 SP1. To do this, visit the following Microsoft website: Windows 7 IT Pro Category

To obtain assisted support for Windows 7 SP1, visit the following Microsoft website: Windows 7 SP1 Support

For online help with troubleshooting SP1 installation issues, visit the following Microsoft website: Troubleshoot problems installing a service pack for Windows 7 or Windows Server 2008 R2

Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2