Opening VS2010 today, the extension manager notified me of an update for NuGet Package Manager.
During the install, I get an \'Installation Failed\' with an option t
After uninstalling Nuget from Control panel, Go to C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\Extensions\Microsoft Corporation\NuGet Package Manager\ or the location matching similar pattern based upon windows bit version, and delete the folder 1.0.11220.104. And, if you install it now, you wont' get the same problem.