Getting "Table is not connected to the data" error despite RegisterData called

Hello, I have a report with several data sources defined. I am registering the data but I get a Table is not connected to the data error. Can anyone help?

using (var report = new Report())


               report.Load("Reportes/Reporte presupuesto.frx");

               report.RegisterData(presupuestoPdf.Referencias.ToList(), "Referencias");

               report.RegisterData(presupuestoPdf.Conceptos.ToList(), "Gastos");

               report.RegisterData(presupuestoPdf.Liquidacion.ToList(), "Liquidacion");


               using (var stream = new MemoryStream())


                   report.Export(new PDFSimpleExport(), stream);

                   return stream.ToArray();





  • open 'Reporte presupuesto.frx' with notepad, check the content in 'dictionary' node

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