When running a Reporting Services Report I get the following error:
An error has occurred during rendering of chart chart1. Details: Method not found: 'Boolean Dundas.Charting.WebControl.Series.get_PlotAsLine()'. (rsErrorDuringChartRendering)Method not found: 'Boolean Dundas.Charting.WebControl.Series.get_PlotAsLine()'.
What is the cause and fix of this?
This is likely to have been caused by corruption of the DunasWebChart.dll file located in the ReportServ\bin folder. What caused this corruption is unclear, it may have resulted from manually copying on older/newer version of the DLL overtop of the correct DLL.To resolve this issue requires replacing the DLL with the correct version. Reapplying the current SQL Server service pack does not appear to replace this file in our testing. Instead you may need to backup and then reinstall SQL Server Reporting Services.
NOTE: Reinstalling Reporting Services may cause you to lose current configuration/and or data. The best method of reinstalling Reporting Services without loss is outside the scope of this answer and further advice should be sought from a qualified professional.All Answers provided are subject to our standard Answers Disclaimer.