Apologies for getting back to this topic with such delay.
I have investigated further on the Microsoft technical support forums for you and it seems there was no sure cure for this error at the time of my research. Try these just in case, they may not help however will not harm:
Description of the Patch Registration Cleanup Tool
http://support.microsoft.com/kb/976220/
How do I reset Windows Update components? - a Mr Fixit
http://support.microsoft.com/kb/971058
Description of the System Update Readiness Tool for Windows Vista, for Windows Server 2008, and
for Windows 7
http://support.microsoft.com/kb/947821
If needed you can get free incident reports however the above should take care of it for you.
For Windows Updates - Free Incident Report
Go Here and Click -> Windows Update fails while scanning for, downloading, or installing updates
http://support.microsoft.com/gp/wusupport#tab3
For Security Updates you can get a Free Support Incident Report
http://www.microsoft.com/protect/resources/support.aspx
Please let me know if you have managed to do so and if there is anything further that I can help you with.