Application getting crashed when CrystalReports.Engine.ReportDocument.ExportToStream calling

Dear All,

In VS 2008,

Am able to convert the Portable Document Format to Stream by using the below code.

Dim reportDocument As New CrystalDecisions.CrystalReports.Engine.ReportDocument

reportDocument.ExportToStream(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat)

In VS2012, Am not able to do the same one.

Please suggest what i have to do.

Thanks and Regards,

Ramesh.N.R