title: Error on netcoreapp1.1 when adding a netstandard1.6.1 reference
body: <p><a href="https://i.stack.imgur.com/rFGrH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rFGrH.png" alt="enter image description here"></a></p>
  
  <p>I tried to update my website project netcoreapp1.0 to netcoreapp1.1 and DAL project (netstandard1.6.1) but this error pops up when i try to add my DAL project as reference to my website project.</p>
  
  <p>Heres the project.json of my projects:</p>
  
  <p>DAL Project(netstandard1.6.1)</p>
  
  <pre><code>{
    "version": "1.0.0-*",
    "dependencies": {
      "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.1.0",
      "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0"
    },
    "frameworks": {
      "netstandard1.6": {
        "imports": "dnxcore50",
        "dependencies": {
          "NETStandard.Library": "1.6"
        }
      }
    }
  }
  </code></pre>
  
  <p>Website project(netcoreapp1.1)</p>
  
  <pre><code>{
    "dependencies": {
      "BundlerMinifier.Core": "2.2.301",
      "Microsoft.AspNetCore.Authentication.Cookies": "1.1.0",
      "Microsoft.AspNetCore.Diagnostics": "1.1.0",
      "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.1.0",
      "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.1.0",
      "Microsoft.AspNetCore.Mvc": "1.1.0",
      "Microsoft.AspNetCore.Razor.Tools": {
        "version": "1.0.0-preview2-final",
        "type": "build"
      },
      "Microsoft.AspNetCore.Routing": "1.1.0",
      "Microsoft.AspNetCore.Server.IISIntegration": "1.1.0",
      "Microsoft.AspNetCore.Server.Kestrel": "1.1.0",
      "Microsoft.AspNetCore.StaticFiles": "1.1.0",
      "Microsoft.EntityFrameworkCore.SqlServer": "1.1.0",
      "Microsoft.EntityFrameworkCore.SqlServer.Design": "1.1.0",
      "Microsoft.EntityFrameworkCore.Tools": {
        "version": "1.0.0-preview2-final",
        "type": "build"
      },
      "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0",
      "Microsoft.Extensions.Configuration.Json": "1.1.0",
      "Microsoft.Extensions.Configuration.UserSecrets": "1.1.0",
      "Microsoft.Extensions.Logging": "1.1.0",
      "Microsoft.Extensions.Logging.Console": "1.1.0",
      "Microsoft.Extensions.Logging.Debug": "1.1.0",
      "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0",
      "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.1.0",
      "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
        "version": "1.0.0-preview2-final",
        "type": "build"
      },
      "Microsoft.VisualStudio.Web.CodeGenerators.Mvc": {
        "version": "1.0.0-preview2-final",
        "type": "build"
      }
    },
  
    "tools": {
      "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
      "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final",
      "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview2-final",
      "Microsoft.Extensions.SecretManager.Tools": "1.0.0-preview2-final",
      "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
        "version": "1.0.0-preview2-final",
        "imports": [
          "portable-net45+win8"
        ]
      }
    },
  
    "frameworks": {
      "netcoreapp1.1": {
        "dependencies": {
          "Microsoft.NETCore.App": {
            "type": "platform",
            "version": "1.1.0"
          }
        },
        "imports": [
          "dotnet5.6",
          "portable-net45+win8"
        ]
      }
    },
  
    "buildOptions": {
      "emitEntryPoint": true,
      "preserveCompilationContext": true
    },
  
    "runtimeOptions": {
      "configProperties": {
        "System.GC.Server": true
      }
    },
  
    "publishOptions": {
      "include": [
        "wwwroot",
        "**/*.cshtml",
        "appsettings.json",
        "web.config"
      ]
    },
  }
  </code></pre>