Windows Update Error Codes 64C and 643

I cannot install the updates: Security Update for Microsoft Silverlight (KB2668562), Update for Microsoft .NET Framework 4 (KB2468871), and Security Update for Microsoft Visual C++ 2010 Redistributable Package (KB2467173).
I have tried restarting, re installing .netframework 4, and downgrading to 3.5 then retrying.
I have researched these errors and most of them are solved by re installing or downgrading then retrying but that hasnt worked for me. I did have a third party theme installed and used universal theme patcher. I restored the three patched files but still nothing works. I also have noticed when I apply a "stock" theme such as an aero theme my start orb doesnt change back to the original one. A screen shot is attached. Please help!!

Update: I installed the silverlight update but still the other two wont work.
KB2468871 error 643
KB2467173 error 64C
Please somebody help me

bump

Lets try to fix one at a time.
Re KB2468871 error 643 > Refer to the links below for information.

KB2468871 System Update Install Error! (error 643) - Microsoft Answers

Update for Microsoft .NET Framework 4 for x64-based Systems (KB2468871) fails with error code 643

Visual Studio Sp1 Installation failed for NDP40-KB2468871.exe error code 0x643

JMH,
Thank you so much for your reply. Copying the dll to the folders fixed it!! However, I am still having trouble with KB2467173 with the error 64C. Thank you for your help

Glad we have fixed one of your problems.
Real life calls me here in a few minutes.
Rest assured I will get back to you in a few hours re your other problem.

Alright, sounds good

Back briefly...
Here you are. :)
Read through the links below.
I would anticipate the first one will help you.
Good luck!

Please post back the results.

Update kb2467173 error code 64c

windows 7 update fails KB2538243, KB2467173 and KB2533552 - Microsoft Answers

The first link did the trick! Thank you for your help I have had troubles with this for so long!!

You are most welcome.
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