Failed to add reference to 'Newtonsoft.Json'
nuget, nuget-package, visual-studio-2012, windows, windows-8
Solution
Check if you already have Newtonsoft.Json reference added in packages.config. If yes, delete Newtonsoft.Json entry and retry Install-Package.
Problem
I just installed Windows 8 on my PC and downloaded Microsoft Visual Studio Express 2012 for Windows 8. Updated and everything, and when I try to install anything thru Package Manager Console, I get following error: ``` PM> Install-Package Parse Attempting to resolve dependency 'Newtonsoft.Json (≥ 4.5.9)'. Successfully installed 'Newtonsoft.Json 4.5.11'. Successfully installed 'parse 1.0.5'. Successfully uninstalled 'Newtonsoft.Json 4.5.11'. Install failed. Rolling back... Install-Package : Failed to add reference to 'Newtonsoft.Json'. At line:1 char:1 + Install-Package Parse + ~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [Install-Package], InvalidOperationException + FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand ``` Does anyone know how to fix this error? Thanks, Jack