Working in VS 2003. I have a report with 2 subreports. I kept getting an error: Exception of type Microsoft.ReportingServices.ReportRendering.ReportRenderingException was thrown. Must be non-negative and less than the size of the collection. Parameter name: index.
I could remove one of the subreports, either one, and run the report without error. After rebuilding/rerunning step by (grueling) step, I've concluded that the problem is I can't repeat a group header on each subreport-only one or the other. Has anyone else encountered this and have any idea of a workaround?
Thank you,
CLR