Windows 7 - Error 80073712 when installing SP1

I have been trying to install SP1 since Apr 2011. I keep getting the error 80073712. I have been able to install all of the other updates.
I have downloaded and run system readiness tool.
I have run troubleshooting/fix problems with windows update
I have run sfc/scannow.
I have run MS Fixit as well.

I seem to have a corrupt manifest file. My laptop came windows 7 loaded so I only have recovery disks and a recovery partition. I don't want to have to do a complete recovery and have to install all my software again.

Here is the message in the checksur file. Can anyone help?

=================================
Checking System Update Readiness.
Binary Version 6.1.7601.21645
Package Version 13.0
2011-09-26 14:34
Checking Windows Servicing Packages
Checking Package Manifests and Catalogs
Checking Package Watchlist
Checking Component Watchlist
Checking Packages
Checking Component Store
(f) CSI Manifest Failed Catalog Check 0x00000000 winsxs\Manifests\wow64_microsoft-windows-ie-htmlrendering_31bf3856ad364e35_8.0.7600.16444_none_94713718e71db047.manifest wow64_microsoft-windows-ie-htmlrendering_31bf3856ad364e35_8.0.7600.16444_none_94713718e71db047
Summary:
Seconds executed: 845
Found 1 errors
CSI Manifest Failed Catalog Check Total count: 1
Unavailable repair files:
winsxs\manifests\wow64_microsoft-windows-ie-htmlrendering_31bf3856ad364e35_8.0.7600.16444_none_94713718e71db047.manifest

You need to find another PC running the same version of Windows and copy a file from it...
Take a copy of the file
%windir%\winsxs\Manifests\wow64_microsoft-windows-ie-htmlrendering_31bf3856ad364e35_8.0.7600.16444_none_94713718e71db047.manifest
copy it to %Windir%\Temp\CheckSUR\winsxs\manifests\ on the problem PC
Rerun the system update readiness tool
That should fix it
A full guide is at Fix Windows Update or Service Pack error 80073712 - DIY Media Home