Visual Studio SetSite failed for package [JavaScriptWebExtensionsPackage] 错误解决方案一则

安装

AspNet5.ENU.RC1.exe

Microsoft ASP .NET and Web Tools 2015 (RC) – Visual Studio 2015

打开VS后发生了错误

<entry>  <record>628</record>  <time>2015/11/19 17:31:26.163</time>  <type>Information</type>  <source>VisualStudio</source>  <description>Begin package load [JavaScriptWebExtensionsPackage]</description>  <guid>{30DB8F9B-EC9F-44D6-B377-83C7C27A1A8B}</guid> </entry> <entry>  <record>629</record>  <time>2015/11/19 17:31:26.163</time>  <type>Error</type>  <source>VisualStudio</source>  <description>SetSite failed for package [JavaScriptWebExtensionsPackage]</description>  <guid>{30DB8F9B-EC9F-44D6-B377-83C7C27A1A8B}</guid>  <hr>80131500</hr>  <errorinfo>撰写生成了一个撰写错误，其根本原因有 1 点，如以下所列。 有关详细信息，请查看 CompositionException.Errors 属性。1) 未找到与约束   ContractName  Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices  RequiredTypeIdentity  Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices 匹配的导出结果: 无法对部件“Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices”设置导入“Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices._webProjectServices (ContractName="Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices")”。元素: Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices._webProjectServices (ContractName="Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices") --> Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices</errorinfo> </entry> <entry>  <record>630</record>  <time>2015/11/19 17:31:26.163</time>  <type>Error</type>  <source>VisualStudio</source>  <description>End package load [JavaScriptWebExtensionsPackage]</description>  <guid>{30DB8F9B-EC9F-44D6-B377-83C7C27A1A8B}</guid>  <hr>80131500</hr>  <errorinfo>撰写生成了一个撰写错误，其根本原因有 1 点，如以下所列。 有关详细信息，请查看 CompositionException.Errors 属性。1) 未找到与约束   ContractName  Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices  RequiredTypeIdentity  Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices 匹配的导出结果: 无法对部件“Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices”设置导入“Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices._webProjectServices (ContractName="Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices")”。元素: Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices._webProjectServices (ContractName="Microsoft.VisualStudio.Html.Package.Project.IWebProjectServices") --> Microsoft.VisualStudio.JavaScript.Web.Extensions.ReferenceAutoSync.ProjectServices</errorinfo> </entry> <entry>  <record>631</record>  <time>2015/11/19 17:32:43.519</time>  <type>Information</type>  <source>VisualStudio</source>  <description>Entering function CVsPackageInfo::HrInstantiatePackage</description>  <guid>{8C28E535-ABC9-4F92-B5C9-6C16617C8884}</guid> </entry> <entry>  <record>632</record>  <time>2015/11/19 17:32:43.519</time>  <type>Information</type>  <source>VisualStudio</source>  <description>Begin package load [EurekaPackage]</description>  <guid>{8C28E535-ABC9-4F92-B5C9-6C16617C8884}</guid> </entry> <entry>  <record>633</record>  <time>2015/11/19 17:32:43.557</time>  <type>Error</type>  <source>VisualStudio</source>  <description>SetSite failed for package [EurekaPackage]</description>  <guid>{8C28E535-ABC9-4F92-B5C9-6C16617C8884}</guid>  <hr>80131500</hr>  <errorinfo>撰写生成了多个撰写错误，其根本原因有 3 点，如以下所列。 有关详细信息，请查看 CompositionException.Errors 属性。1) 未找到与约束   ContractName  Microsoft.VisualStudio.Web.Extensions.Common.Services.IProjectEventServices  RequiredTypeIdentity  Microsoft.VisualStudio.Web.Extensions.Common.Services.IProjectEventServices 匹配的导出结果: 无法对部件“Microsoft.VisualStudio.Web.PageInspector.Package.Services”设置导入“Microsoft.VisualStudio.Web.PageInspector.Package.Services.ProjectEventServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IProjectEventServices")”。元素: Microsoft.VisualStudio.Web.PageInspector.Package.Services.ProjectEventServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IProjectEventServices") --> Microsoft.VisualStudio.Web.PageInspector.Package.Services2) 未找到与约束   ContractName  Microsoft.VisualStudio.Web.Extensions.Common.Services.IDocumentEventServices  RequiredTypeIdentity  Microsoft.VisualStudio.Web.Extensions.Common.Services.IDocumentEventServices 匹配的导出结果: 无法对部件“Microsoft.VisualStudio.Web.PageInspector.Package.Services”设置导入“Microsoft.VisualStudio.Web.PageInspector.Package.Services.DocumentEventServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IDocumentEventServices")”。元素: Microsoft.VisualStudio.Web.PageInspector.Package.Services.DocumentEventServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IDocumentEventServices") --> Microsoft.VisualStudio.Web.PageInspector.Package.Services3) 未找到与约束   ContractName  Microsoft.VisualStudio.Web.Extensions.Common.Services.IServerHostServices  RequiredTypeIdentity  Microsoft.VisualStudio.Web.Extensions.Common.Services.IServerHostServices 匹配的导出结果: 无法对部件“Microsoft.VisualStudio.Web.PageInspector.Package.Services”设置导入“Microsoft.VisualStudio.Web.PageInspector.Package.Services.ServerHostServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IServerHostServices")”。元素: Microsoft.VisualStudio.Web.PageInspector.Package.Services.ServerHostServices (ContractName="Microsoft.VisualStudio.Web.Extensions.Common.Services.IServerHostServices") --> Microsoft.VisualStudio.Web.PageInspector.Package.Services</errorinfo> </entry> <entry>  <record>634</record>  <time>2015/11/19 17:32:43.557</time>  <type>Error</type>  <source>VisualStudio</source>  <description>End package load [EurekaPackage]</description>  <guid>{8C28E535-ABC9-4F92-B5C9-6C16617C8884}</guid>  <hr>80131500</hr>  <errorinfo>未将对象引用设置到对象的实例。</errorinfo> </entry>

解决方案如下