Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

Keep getting this error when positioning to the last page of a report.

Using Server 2003...SqlRpt Svcs 2000 sp2

Detail error msg:

• Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. (rrRenderingError) Get Online Help
  • Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown.
    • Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index

Anyone have any suggestions?  Any way to find out what collection is blowing?...or where parameter name: index comes from?