I'm trying to export an XYZ scatter plot to PDF and JPEG using Nevron Chart 2010 Volume 1. JPEG export is working fine, but the PDF export only exports the X and Y axes, resulting in a 2D plot being saved in the file.

Here's my code for the export:

var sf = new SaveFileDialog { Filter = "PDF files (*.pdf)|*.pdf", InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory) };
if(sf.ShowDialog(this) == DialogResult.OK)
{
    var fmt = new NPdfImageFormat();
    m_chartControl.ImageExporter.SaveToFile(sf.FileName, fmt);
}

Is there anything else I should be doing or is 3D chart export to PDF not supported at all? Thanks.