I just pushed two big updates to MVVM Light setup components.
MSI installers with Silverlight 5 support The MSI installers are available on Codeplex. The current version supports Silverlight 3, Silverlight 4, Silverlight 5 (new), WPF 3.5 SP1, WPF 4, Windows Phone 7.0 and Windows Phone 7.1. The installer for V3 is available, as well as the one for V4 beta.
NuGet support including Silverlight 5 I also pushed a new version of the NuGet packages which includes Silverlight 5. To install MVVM Light into an existing application with the help of the NuGet package manager in Visual Studio, check the instructions.
If you look for "mvvmlight" on NuGet, you will find four packages:
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