Visual Studio can't find .NET Core SDK?
<p>I've got Visual Studio 2015 Professional installed, as well as what I <em>should</em> need to run and debug .NET Core code.  Those packages are:</p>

<p>Microsoft .NET Core 1.0.0 - SDK Preview 2 (x64)<br>
Microsoft .NET Core 1.0.0 - SDK Preview 2 (x86)<br>
Microsoft .NET Core 1.0.0 - VS 2015 Tooling Preview 2</p>

<p>When I try to open an existing .NET Core app that was developed on a Mac, I get the following error popup in Visual Studio:</p>

<p><a href="https://i.stack.imgur.com/ur5MH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ur5MH.png" alt="Visual Studio Failure Message"></a><br>
When I run the <code>dotnet --version</code> command in <code>cmd.exe</code>, I get the following output:  <code>1.0.0-preview2-003121</code>.</p>

<p>Am I missing some version of something?  I've gone over a bunch of other posts that suggested that making sure that the DotNet CLI was uninstalled would fix this kind of problem, but I don't have it installed, and I'm still not able to get Visual Studio to correctly restore packages or build a .NET Core app.</p>

<p><strong>EDIT:</strong>  Here are the contents of <code>project.json</code>:</p>

<pre><code>{
  "version": "0.1.0-*",
  "buildOptions": {
    "emitEntryPoint": true
  },
  "dependencies": {
    "Microsoft.NETCore.App": {
      "type": "platform",
      "version": "1.0.0"
    },
    "System.IdentityModel.Tokens.Saml": "5.0.0-beta8-305061149",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel.Https": "1.0.0",
    "Microsoft.Extensions.DependencyInjection": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "AWSSDK.S3": "3.2.5-beta",
    "System.Threading.Tasks.Extensions": "4.0.0"
  },
  "frameworks": {
    "netcoreapp1.0": {}
  }
}
</code></pre>