I guess I just discovered a bug with ColumnCharts.
When you hide a chart (either because you change the state or
change the chart's visible and includeInLayout properties AND
change/update the dataprovider while it is hidden, you get an Error
when displaying the chart again.
To avoid that to you explicitly have to tell the NumericAxis
(Y-axis in my case) to update with
Does anybody have an explanation for that or a better