"Could not load file or assembly 'System.Runtime, Version=4.2.0.0'"

Steps to reproduce

• dotnet new -t web1.1
• dotnet restore
• dotnet run

Expected behavior

Application started. Press Ctrl+C to shut down.

Actual behavior

Unhandled Exception: System.IO.FileLoadException: Could not load file or assembly ‘System.Runtime, Version=4.2.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a’. The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Environment data

dotnet --info output:

.NET Command Line Tools (1.0.0-rc3-004530)

Product Information:
 Version:            1.0.0-rc3-004530
 Commit SHA-1 hash:  10b642bc12

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  14.04
 OS Platform: Linux
 RID:         ubuntu.14.04-x64
 Base Path:   /usr/share/dotnet/sdk/1.0.0-rc3-004530

[mikebrind]

I resolved this by navigating to C:\Users\...\AppData\Roaming\.Nuget\packages and deleting the existing microsoft.visualstudio.web.browserlink folder. Then run dotnet restore on the project folder.

[dasMulli]

The issue here is that the version included in the CLI’s offline package cache of Microsoft.VisualStudio.Web.BrowserLink version 1.1.0 seems to be broken. If do rm -r ~/.nuget/packages/microsoft.visualstudio.web.browserlink and then run dotnet restore and dotnet run again, no issues occur.

I suppose a nightly dev-feed version of that package made it into the CLI? This repros in 1.0.0-rc3-004530 but the version included in 1.0.0-rc4-004711 is fine. Is this fixed permanently? If so, it should probably be marked as an RC3 known issue. cc @piotrpMSFT @livarcocc

MacBook-Pro:tmp martin$ cat ~/.nuget/packages/microsoft.visualstudio.web.browserlink/1.1.0/microsoft.visualstudio.web.browserlink.nuspec 
<?xml version="1.0" encoding="utf-8"?>
<package xmlns="http://schemas.microsoft.com/packaging/2012/06/nuspec.xsd">
  <metadata>
    <id>Microsoft.VisualStudio.Web.BrowserLink</id>
    <version>1.1.0</version>
    <authors>Microsoft</authors>
    <owners>Microsoft</owners>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <description>A middleware that supports creating a communication channel between the development environment and one or more web browsers.</description>
    <tags></tags>
    <serviceable>true</serviceable>
    <dependencies>
      <group targetFramework=".NETFramework4.5.1">
        <dependency id="Microsoft.AspNetCore.Hosting.Abstractions" version="[1.1.0, )" />
        <dependency id="Microsoft.AspNetCore.Http.Abstractions" version="[1.1.0, )" />
        <dependency id="Microsoft.AspNetCore.Http.Extensions" version="[1.1.0, )" />
        <dependency id="Microsoft.Extensions.FileProviders.Physical" version="[1.1.0, )" />
      </group>
      <group targetFramework=".NETStandard1.5">
        <dependency id="System.Net.Sockets" version="[4.4.0-beta-24903-02, )" />
        <dependency id="System.Net.Primitives" version="[4.4.0-beta-24903-02, )" />
        <dependency id="System.IO.MemoryMappedFiles" version="[4.4.0-beta-24903-02, )" />
        <dependency id="System.Diagnostics.Tools" version="[4.4.0-beta-24903-02, )" />
        <dependency id="Microsoft.AspNetCore.Hosting.Abstractions" version="[1.1.0, )" />
        <dependency id="Microsoft.AspNetCore.Http.Abstractions" version="[1.1.0, )" />
        <dependency id="Microsoft.AspNetCore.Http.Extensions" version="[1.1.0, )" />
        <dependency id="Microsoft.Extensions.FileProviders.Physical" version="[1.1.0, )" />
      </group>
    </dependencies>
  </metadata>
</package>