Exception has been thrown by the target of an invocation.

[Sri]

Hi,

I am using telerik repotrviewer for reports and here is my code that dynamically accessing report and assigning to reportviewer.
When I run the application I am getting the following error message.

"Exception has been thrown by the target of an invocation."

Here is my code:
            Type reportManagerType = typeof(ReportClass);
            _reportAssembly = reportManagerType.Assembly;
            string assemblyName = _reportAssembly.GetName().Name;
            _reportName = String.Concat(assemblyName,".", _currentReportInfo.Name);
            _reportType = _reportAssembly.GetType(_reportName);
            _report = (IReportDocument)Activator.CreateInstance(_reportType);
               
            IReportDocument report = (IReportDocument)Activator.CreateInstance(_reportType);
            this.DefaultReportViewer.Report = report;

Please help me...