Error when trying to set output format to

Hi,

I am using ecrion xf rendering server 2008. While i am trying to set output format to svg i am getting error:

Source code:
XFEngine objEngine = new XFEngine();
objEngine.OutputFormat = OutputFormat.SVG;
objEngine.Render(input, output);

Error:
{Ecrion.XF.XFException: Unsupported output format ---> System.Runtime.InteropServices.COMException (0x80020009): Unsupported output format
   at XFComLib.XFRendererClass.render(Object xml, Object output)
   at Ecrion.XF.XFWrapper.render(Stream inputStream, Stream outputStream)
   --- End of inner exception stack trace ---
   at Ecrion.XF.XFWrapper.render(Stream inputStream, Stream outputStream)
   at Ecrion.XF.XFEngine.Render(Stream inputStream, Stream outputStream)
   at SVGChart.GenerateSVGChart.GeneratePieChart() in C:\SVGChart.asmx.cs:line 50}

I am able to generate image in jpeg or png format with same code.

Please help. Thanks in advance.
Regards,
Nilesh Patel.