In the dialog it's still not shown under 'installed'.I've just updated the NuGet package manager (not MSVC though), and tried to reinstall Json.NET. Is my project file broken? How can I repair it? I don't know how to install the package properly, nor how to remove it properly. The 'Manage NuGet' packages dialog shows no packages under 'installed', however in the online package, the json package is listed and marked as installed (so I cannot try to install it).You try to install this package in a project referencing 'WindowsPhone,Version=v8.0', the package however does not contain assemblies compatible with this framework Newtonsoft.Json 5.0.6 could not be installed. Running Install-Package Newtonsoft.Json again gives me the error.Nuget package console says 'no packages installed' when Get-Package.It gave me errors upon installing, so I tried to uninstall everything from package console. I was able to open my project again, and I wanted to reinstall the NuGet package (not knowing it is installed inside the project, not MSVC). Reinstalling MSVC didn't help, so I ended up restoring Windows to a previous state. I tried to install an update which MSVC offered two days ago, and the installation failed, leaving me unable to open my project again. I have added this framework successfully using the command Install-Package Newtonsoft.Json. At some point I decided I want to do something with JSON, and I found that I should use the Json.NET framework, which is available as a NuGet package. I've set up my project with Visual Studio Express 2012, added some C# code, and successfully compiled/deployed to emulator.

Windows package manager