Updates

Hello Padders!

A few updates to your code:

1) Updated to latest highcharts & jQuery: The only fix was to add options.chart.forExport = true; to prevent errors
2) I was experiencing errors loading files from disk so I now load everything into memory and then inject them into the jsdom via the src property
3) Exposed "renderSvg" for people that want to get at the SVG instead of a PNG
4) Added a little bit of logging and handling of exceptions (you were swallowing a load of exceptions)
5) Added an example file

Cheers,
James