我在 VS 2010 中构建了一个支持 VSTO 的 .xlt 模板项目，面向 .NET 4.0。我可以在大多数 64 位 Windows 7/32 位 Office 2010 系统上毫无问题地安装它，但是在一台 32 位 Windows 7/32 位 Office 2010 机器上安装和打开 .xlt 时遇到以下错误。
从外观上看，Excel 正在加载一些 .NET 2.0 和 3.5 程序集的合并。在打开 .xlt 之前，我已确保禁用所有其他加载项。如何强制 Excel 使用 .NET 4.0 CLR。为什么要加载这些旧程序集？
************** Exception Text **************
Microsoft.VisualStudio.Tools.Applications.Runtime.CannotCreateCustomizationDomainException: Customization could not be loaded because the application domain could not be created. ---> System.BadImageFormatException: Could not load file or assembly 'BatchUploadTemplate, Version=1.0.4024.22371, Culture=neutral, PublicKeyToken=f0ddd6d55be31a41' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
File name: 'BatchUploadTemplate, Version=1.0.4024.22371, Culture=neutral, PublicKeyToken=f0ddd6d55be31a41'
at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
at System.Reflection.Assembly.Load(String assemblyString)
at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.DomainInitializer.ActivatePipeline(String addInAssembly, String addInClass, String[] pipelineInfo)
at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.DomainInitializer.StartAddIn(IntPtr hostServiceProvider, String[] pipeline, String assemblyName, String[] entryPoints)
at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.DomainInitializer.StartAddIn(IntPtr hostServiceProvider, String[] pipeline, String assemblyName, String[] entryPoints)
at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.LoadMafPipeline(AppDomain newDomain, IntPtr hostServiceProvider, String fullAssemblyName, String[] entryPoints, OfficeApp officeApplication, OfficeVersion officeVersion, IntPtr& executor)
at Microsoft.VisualStudio.Tools.Office.Runtime.DomainCreator.CreateCustomizationDomainInternal(String solutionLocation, String manifestName, String documentName, Boolean showUIDuringDeployment, IntPtr hostServiceProvider, Boolean useFastPath, IntPtr& executor)
WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].
--- End of inner exception stack trace ---
************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5456 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Office.Runtime.v10.0
Assembly Version: 10.0.0.0
Win32 Version: 10.0.31007.0
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Office.Runtime.v10.0/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Office.Runtime.v10.0.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5456 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Core
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.5420 built by: Win7SP1
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Core/3.5.0.0__b77a5c561934e089/System.Core.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Hosting.v10.0
Assembly Version: 10.0.0.0
Win32 Version: 10.0.31007.0
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Hosting.v10.0/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Hosting.v10.0.dll
----------------------------------------
System.AddIn
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.5446 built by: Win7SP1GDR
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.AddIn/3.5.0.0__b77a5c561934e089/System.AddIn.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.ServerDocument.v10.0
Assembly Version: 10.0.0.0
Win32 Version: 10.0.31007.0
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.ServerDocument.v10.0/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.ServerDocument.v10.0.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Runtime.v9.0
Assembly Version: 9.0.0.0
Win32 Version: 9.0.30729.4130
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Runtime.v9.0/9.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Runtime.v9.0.dll
----------------------------------------
Microsoft.VisualStudio.Tools.Applications.Runtime.v10.0
Assembly Version: 10.0.0.0
Win32 Version: 10.0.31007.0
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.VisualStudio.Tools.Applications.Runtime.v10.0/10.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualStudio.Tools.Applications.Runtime.v10.0.dll
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5460 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5462 (Win7SP1GDR.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Deployment
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Deployment/2.0.0.0__b03f5f7f11d50a3a/System.Deployment.dll
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
System.Security
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.5420 (Win7SP1.050727-5400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Security/2.0.0.0__b03f5f7f11d50a3a/System.Security.dll
----------------------------------------
System.Xml.Linq
Assembly Version: 3.5.0.0
Win32 Version: 3.5.30729.5420 built by: Win7SP1
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml.Linq/3.5.0.0__b77a5c561934e089/System.Xml.Linq.dll
----------------------------------------