System.Reflection.TargetInvocationException was unhandled by user code
  HResult=-2146232828
  Message=Uma exceção foi acionada pelo destino de uma chamada.
  Source=mscorlib
  StackTrace:
       em System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandleInternal& ctor, Boolean& bNeedSecurityCheck)
       em System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
       em System.RuntimeType.CreateInstanceDefaultCtor(Boolean publicOnly, Boolean skipCheckThis, Boolean fillCache, StackCrawlMark& stackMark)
       em System.Activator.CreateInstance(Type type, Boolean nonPublic)
       em System.Activator.CreateInstance(Type type)
       em Stimulsoft.Base.StiActivator.CreateObject(Type type)
       em Stimulsoft.Report.StiReport.GetReportsFromAssembly(Assembly assembly)
       em Stimulsoft.Report.StiReport.GetReportFromAssembly(Assembly assembly)
       em Stimulsoft.Report.StiReport.CreateInstance()
       em Stimulsoft.Report.StiReport.Compile(String path, Stream stream, StiOutputType outputType, Boolean autoCreate, Object standaloneReportType)
       em Stimulsoft.Report.StiReport.Compile(String path, Stream stream, StiOutputType outputType, Boolean autoCreate)
       em Stimulsoft.Report.StiReport.Compile(String path, StiOutputType outputType, Boolean autoCreate)
       em Stimulsoft.Report.StiReport.Compile(String path, StiOutputType outputType)
       em Stimulsoft.Report.StiReport.Compile(StiOutputType outputType)
       em Stimulsoft.Report.StiReport.Compile()
       em Stimulsoft.Report.Engine.StiReportV2Builder.RenderSingleReport(StiReport masterReport, StiRenderState renderState)
       em Stimulsoft.Report.StiReport.RenderReport(StiRenderState renderState)
       em Stimulsoft.Report.StiReport.Render(StiRenderState renderState, StiGuiMode guiMode)
       em Stimulsoft.Report.StiReport.Render(StiRenderState renderState)
       em Stimulsoft.Report.StiReport.Render(Boolean showProgress, Int32 fromPage, Int32 toPage)
       em Stimulsoft.Report.StiReport.Render(Boolean showProgress)
       em Stimulsoft.Report.Mvc.StiReportClass.GetReportSnapshot(StiReport report, String stringData)
       em Stimulsoft.Report.Mvc.StiMvcDesigner.GetReportSnapshotResult(HttpRequestBase request, StiReport report)
       em MvcDesigner_VS2012.Controllers.HomeController.GetReportSnapshot() na c:\Users\dribeiro\Desktop\MvcDesigner VS2012\MvcDesigner VS2012\Controllers\HomeController.cs:linha 100
       em lambda_method(Closure , ControllerBase , Object[] )
       em System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
       em System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
       em System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
       em System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41()
       em System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _)
       em System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
       em System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
       em System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33()
       em System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49()
  InnerException: System.NullReferenceException
       HResult=-2147467261
       Message=Referência de objeto não definida para uma instância de um objeto.
       Source=Stimulsoft.Report
       StackTrace:
            em Stimulsoft.Report.Dictionary.StiBusinessObject.GetBusinessObjectDataFromParent(StiBusinessObject businessObject)
            em Stimulsoft.Report.Dictionary.StiBusinessObject.GetBusinessObjectData(Boolean isColumnsRetrieve)
            em Stimulsoft.Report.Dictionary.StiBusinessObject.GetBusinessObjectData()
            em Stimulsoft.Report.Dictionary.StiBusinessObject.CreateEnumerator()
            em Stimulsoft.Report.Dictionary.StiBusinessObject.CheckEnumerator()
            em Stimulsoft.Report.Dictionary.StiBusinessObject.get_Current()
            em Stimulsoft.Report.Dictionary.StiBusinessObject.get_Item(String name)
            em Reports.Report.My_objectsBusinessObject.get_Id()
            em Reports.Report.InitializeComponent()
            em Reports.Report..ctor()
       InnerException: