I created a custom chart by selecting 3 columns of data and charting it with
the Stock - Hi-Lo-Close.
Then I added a 4th series and plotted that on the secondary axis.
I saved the result as a template, but when I now select 4 columns of data
and try to plot it on my custom template, I get:

Some chart types cannot be combined with other chart types. Select a
different chart type.

Does anyone know what I could do to get this template to work? I tried
loading 3 columns and got the same message.

Thanks.