All chart types now has two additional files:
export.aspx and export.aspx.cs
These files are used for exporting charts to images in .net platform.
If you are using .net and want to enable export to image feature, set
<export_image_file>amline/export.aspx</export_image_file>
(or some other folder)
Update:
ASP.NET controls for amCharts released
That’s great news!