I have exactly the same problem. I use a very simple example which is very close to the given examples in the FusionCharts website:
The HTML file:
<html>
<head>
<title>My Chart</title>
<script type="text/javascript" src="JSClass/FusionCharts.js"></script>
<script type="text/javascript">
function ExportMyChart() {
var testObj = getChartFromId('myChartId');
if( testObj.hasRendered() ) testObj.exportChart();
}
</script>
</head>
<body>
<div id="chartContainerDiv">FusionCharts loaded here...</div>
<script type="text/javascript">
var myChart = new FusionCharts('Charts/Column3D.swf', 'myChartId', '900', '300', '0', '1');
myChart.setDataURL('Data.xml');
myChart.render('chartContainerDiv');
</script>
<input type="button" value="Export My Chart" onclick="ExportMyChart()" />
</body>
</html>
The XML file:
<chart chartTopMargin='40' caption='Month report' xAxisName='Attendance / Month' formatNumberScale='0' thousandSeparator=' ' chartLeftMargin='15' chartRightMargin='15' chartTopMargin='15' chartBottomMargin='15' rotateYAxisName='0' exportEnabled='1' exportHandler='ExportHandlers/PHP/FCExporter.php' exportAtClient='0' exportAction='download' >
>
<set label='12.2009' value='10000' />
<set label='01.2010' value='15000' />
<set label='02.2010' value='17500' />
<set label='03.2010' value='15000' />
<set label='04.2010' value='4000' />
</chart>
All files are loaded successfully. I see the chart, but when I click on the button I get js error that hasRendered is not a function.
I'm using the package available in the download section of the FusionCharts web site and I tested on Mozilla Firefox 3.6.3.
