I am not able to install any package by Nuget. For example when I want install entity framework I receive following error:
install-package EntityFramework
Su
Here is what solved it for me: VS2012 with EF6
I found my answer here: http://richardschneider.net/blog/wordpress/?p=21
From the VS command prompt, run the following command:
regsvr32 "C:\Program Files (x86)\Common Files\microsoft shared\MSEnv\VsLangproj.olb"
After that, go to Package manager console and run the following:
Install-Package EntityFramework -Version 6.1.3