I am installing MVC 4 on a box with an up to date VS 2010 and get NuGet install errors. The NuGet installed already is the newest available. I have tried installing MVC 4 with both NuGet installed already and not installed.
The error asks for NuGet.msi, but I have been unable to find that.
Are there any known issues that could cause this?

We also had problems with nuget update. This fix help us: Visual Studio 2010 SP1 Hotfix available
More details: NuGet Package Manager
Review current release notes/known issues on the NuGet Docs site, including details and solution for about a common upgrade failure (Visual Studio 2010 SP1 Hotfix available)Added:
Also you can try to install MVC 4 with
Microsoft Web Platform Installerafter uninstallingNuget.