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希望有人能够对这个问题有所了解。

我在 vb.net 中有一个表单（使用 VS2010，.net 4.0 框架），它不会加载，而是在变量声明中出错。我的声明中有以下两行

    Dim rpRBuilders As New rpRBuilder_2010.rp_RBuilder
    Public CR As New ReportDocument

现在，当我在每一行上放置断点时，它会在第一行中断，但在处理“Public CR As New ReportDocument”时出错并收到一个通用错误屏幕：

错误屏幕

我已经下载并导入了 VS2010 的所有水晶报表库，并在我的项目中使用 13.0.2000.0 版本。

提供的异常细节对我来说并不是特别有帮助，但你们中的一个人可能比我更能理解它：

    System.InvalidOperationException was unhandled
    Message=An error occurred creating the form. See Exception.InnerException for
    details. The error is: Invalid ServicedComponent-derived classes were found in the
    assembly.
    (Classes must be public, concrete, have a public default constructor, and meet all 
    other ComVisibility requirements)
    Source=ReportBuilder2010
    StackTrace:
    at ReportBuilder2010.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 
    17d14f5c-a337-4978-8281-53493378c1071.vb:line 190
    at ReportBuilder2010.My.MyProject.MyForms.get_frmReports()
    at ReportBuilder2010.frmReports.Main() in C:\To Back Up\Repository\Report Builder  
    2010\ReportBuilder2010\ReportBuilder2010\frmReports.Designer.vb:line 0
    at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
    at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence 
    assemblySecurity, String[] args)
    at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
    at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, 
    ContextCallback callback, Object state, Boolean ignoreSyncCtx)
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,  
    ContextCallback callback, Object state)
    at System.Threading.ThreadHelper.ThreadStart()
    InnerException: System.EnterpriseServices.RegistrationException
    Message=Invalid ServicedComponent-derived classes were found in the assembly.
    (Classes must be public, concrete, have a public default constructor, and meet all 
    other ComVisibility requirements)
    Source=System.EnterpriseServices
    StackTrace:
        at System.EnterpriseServices.RegistrationThreadWrapper.PropInstallResult()
        at        
    System.EnterpriseServices.RegistrationHelper.InstallAssemblyFromConfig
    (RegistrationConfig& regConfig)
        at System.EnterpriseServices.RegistrationHelper.InstallAssembly(String 
    assembly, String& application, String partition, String& tlb, InstallationFlags 
    installFlags)
        at    System.EnterpriseServices.RegistrationHelper.System.EnterpriseServices.

    Thunk.IThunkInstallation.DefaultInstall(String asm)
        at System.EnterpriseServices.Thunk.Proxy.RegisterAssembly(Assembly assembly)
        at System.EnterpriseServices.Thunk.Proxy.LazyRegister(Guid id, Type 
    serverType, Boolean checkCache)
        at System.EnterpriseServices.Thunk.Proxy.CoCreateObject(Type serverType, 
    Boolean bQuerySCInfo, Boolean& bIsAnotherProcess, String& uri)
        at System.EnterpriseServices.ServicedComponentProxyAttribute.
    CreateInstance(Type serverType)
        at System.Runtime.Remoting.Activation.ActivationServices.IsCurrentContextOK
    (RuntimeType serverType, Object[] props, Boolean bNewObj)
        at ReportBuilder2010.frmReports..ctor() in C:\To Back Up\Repository\Report 
    Builder 2010\ReportBuilder2010\ReportBuilder2010\frmReports.vb:line 27

提前感谢大家的帮助，如果需要，我可以提供更多详细信息。

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