VS2012加载失败

No exports were found that match the constraint

开始->运行->devenv.exe /resetuserdata->回车，再打开就好了

1.WebGrease

未能加载文件或程序集“WebGrease, Version=1.5.1.25624, Culture=neutral, PublicKeyToken=31bf3856ad364e35”或它的某一个依赖项。找到的程序集清单定义与程序集引用不匹配。 (异常来自 HRESULT:0x80131040) 

解决方法

通过"uninstall-package -f WebGrease"先卸载，然后通过"install-package WebGrease"再下载最新版本，问题解决。

关于使用NuGet程序包卸载和安装：

● 查看版本：到https://www.nuget.org

● 删除程序包：uninstall-package -f WebGrease

● 安装某个版本的程序包：install-package WebGrease -Version 1.3.0

This issue was resolved by upgrading from WebGrease 1.5.2 to 1.6.0 as well as updating Microsoft.AspNet.Web.Optimization

Install-Package Microsoft.AspNet.Web.Optimization

Update-Package WebGrease

Uninstall-Package Microsoft.AspNet.Web.Optimization

Uninstall-Package WebGrease

Install-Package Microsoft.AspNet.Web.Optimization

Update-Package WebGrease

      <dependentAssembly>

        <assemblyIdentity name="Microsoft.Practices.Unity" publicKeyToken="31bf3856ad364e35" culture="neutral" />

        <bindingRedirect oldVersion="0.0.0.0-1.3.0.0" newVersion="1.5.2.14234"/>

      </dependentAssembly>

    </assemblyBinding>

2.System.Web.Mvc

CS0234: 命名空间“Purple”中不存在类型或命名空间名称“Model”(是否缺少程序集引用?)

行 51:     <pages>

行 52:       <namespaces>

行 53: <add namespace="Purple.Model" />

行 54:         <add namespace="System.Web.Mvc" />

行 55:         <add namespace="System.Web.Mvc.Ajax" />

=> 把Copy local 设成True

3.Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configuration info

http://social.msdn.microsoft.com/Forums/vstudio/en-US/58271e39-beca-49ac-90f9-e116fa3dd3c0/mxed-mode-dll-unable-to-load-in-net-40?forum=clr

在配置文件里加上如下信息即可：

<configuration>

  <startup useLegacyV2RuntimeActivationPolicy="true">

    <supportedRuntime version="v4.0"/>

    <requiredRuntime version="v4.0.20506"/>

  </startup>

</configuration>