Rendering Error + object referance not set to an Instance of an object

I am using Evaluation version of "Aspose.word for reporting services ".
While i am Exporting the report to Aspose.word format , I am getting the Export Error( i.e An error ocured during local report processing.An unexpected error occured in report Processing.An error occured during rendering of the report.Object referance not set to an instance of an object).

Thanks for your inquiry. Would you please attach your RDL report for testing?
Best regards.