I'm a complete newbie to the Google Charts API and I'm experimenting with 
some of your examples and having difficulty.  Our development tool is Alpha 
v11.  I downloaded your API and added it to the JavaScript directory of my 
project but I also reference it in the html because I'm not sure I have it 
setup correctly. I am getting the error outlined in the subject of this 
post. It's as if the Google Charts API is not being loaded or initialized 
and wondered if anyone has any idea as to why.

*my html:*

<!doctype html>
<!-- per example at 
https://google-developers.appspot.com/chart/interactive/docs/gallery/combochart 
-->
<script type="text/javascript" src="https://www.google.com/jsapi";></script>
<script type="text/javascript">
      google.load("visualization", "1", {packages:["corechart"]});

      // Set a callback to run when the Google Visualization API is loaded.
// this is commented out because I plan to eliminate the on click button 
press and render the chart automatically but this is not important for now
      // google.setOnLoadCallback(drawChart);
</script>
<div id="mychart" style="HEIGHT: 3in; WIDTH: 3in">chart will show here</div>

*I have a button that when pressed calls the javascript function to create 
and draw the chart:*

function drawChart() {
  // Some raw data (not necessarily accurate)
  var data = google.visualization.arrayToDataTable([
    ['Month', 'Bolivia', 'Ecuador', 'Madagascar', 'Papua New Guinea', 
'Rwanda', 'Average'],
    ['2004/05',  165,      938,         522,             998,           
450,      614.6],
    ['2005/06',  135,      1120,        599,             1268,          
288,      682],
    ['2006/07',  157,      1167,        587,             807,           
397,      623],
    ['2007/08',  139,      1110,        615,             968,           
215,      609.4],
    ['2008/09',  136,      691,         629,             1026,          
366,      569.6]
  ]);
  var options = {
    title : 'Monthly Coffee Production by Country',
    vAxis: {title: "Cups"},
    hAxis: {title: "Month"},
    seriesType: "bars",
    series: {5: {type: "line"}}
  };
  var chart = new 
google.visualization.ComboChart(document.getElementById('mychart'));
  chart.draw(data, options);
}





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