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>