Hi Todd,
I created the table as yours and this my chart configuration.
Please confirm that you have the same configuration otherwise copy/paste it here so I can use yours.
<Configuration DataIndex="0">
<XAxis FieldName="ProdGrp" SortFieldName="SortPeriod" SortFieldOrder="DESC" />
<YAxis />
<Series>
<Items FieldName="OntimeStep" AggregateFunction="Sum" ChartSeriesType="COLUMN" />
<Items FieldName="TotalStep" AggregateFunction="Sum" ChartSeriesType="COLUMN" />
</Series>
</Configuration>
Thanks,
NIc