I have a Windows Server 2012R2 machine that I installed with Server Core, and then decided that I wanted to switch to GUI.

I'll make the long story short: I ran windows updates, and now the source files are older/out of sync with the operating system, and I need to update the source files.

Here are a couple of articles that outline how this is supposed to work:

http://blog.coretech.dk/kaj/why-i-cant-convert-my-windows-server-2012-r2-core-to-gui/

http://blogs.technet.com/b/joscon/archive/2012/11/14/how-to-update-local-source-media-to-add-roles-and-features.aspx

I have followed these instructions, but the updates are not successfully updating the source. I get errors like:

"An error occurred - Package_for_KB29671203 Error: 0x80073701, Error: 14081, The referenced assembly could not be found."

or

"add-windowspackage failed. error code = 0x80073701, add-windowspackage: the referenced assembly could not be found"

I've extensively searched for help on those error codes related to Server 2012 and windows updates, but my google-fu is failing me.

I am using windows update packages found in c:\Windows\SoftwareDistribution\Download

How can I get these updates to bring my source files up to current?

Thanks!