I'm using this code to pass a date to the header section of my report.

VB Code:
  1. rpt.SetParameterValue("begindate", tranPeriod)

The code works fine on the development machine, but my users are gettting this error:

Method not found: void:
CrystalDecisions.CystalReports.Engine.ReportDocument.SetParameterValue(System String, System Object)


any suggestions?