I'm sorry, but I was not able to reproduce this error in a single application. As it works now for me, I have no problem any more ... Sorry. To avoid errors like this in the future, you could change Function TChartSeries.InternalColor(ValueIndex:Integer):TColor; Begin if Assigned(FColors) and (FColo...

Did you set the "Color Each" Property under Series ->Series1 -> Format?

When I add several points to a TLineseries and afterwards call Chart1.Refresh, it runs into an endless loop of exceptions: EListError: List index out of bounds (-1). The exception occurs in TeEngine.pas in "TChartSeries.GetValueColor", where Internalcolor(ValueIndex) is called. I use several TLinese...