Assuming the testing server is running the code posted, the error message sounds a bit misleading. <piechart> is supported even in MX7.
What happens if you use one of the default styles:
Copy default_pie.xml into your cfm script directory. Then create a simple example and use the file name, instead of a variable. Any difference?
I'm not sure why that worked, but it did. Thank you very much!
You are welcome. Though I think the error message was misleading. Sometimes programs are picky about how you generate xml content. They do not like extra line feeds, etcetra. Try placing the <?xml ...> declaration on the same line as the <cfsavecontent...> or alternately doing a trim() on the variable.
<cfsavecontent variable="piestyle"><?xml version="1.0" encoding="UTF-8"?>
<pieChart depth="Plain" style="Solid" angle="0" rim="Thick" is3D="false" altText="#alttext#" font="Arial-12">