An Enterprise Report Application Server was not found.

Hi all ,

I have installed Crystal reports 2013 OEM ,I am getting this follwin error "An Enterprise Report Application Server was not found." any one please any help or explination of this exception.

tempFile = C:\Program Files (x86)\SAP BusinessObjects\SAP BusinessObjects Enterprise XI 4.0\Samples\En\Reports\NiceReporter\tth2730334.rpt;

crystalReport = new ReportClientDocumentClass();

object path = (object)this.tempFile;

crystalReport.Open(ref path, 0);

Thanks all