wpftoolkit debugging error: Missing DataPointSeries.cs?

Jan 16, 2014 at 3:40 PM
I used wpftoolkit to depict a chart but after depicting when I close the window visual studio suspends.

i debugged the program and it opens a window:

no source available .

and it then brings a window for openning DataPoints.cs:

C:\dd\WPF_1\src\wpf\src\ControlsPack\WPFToolkit\DataVisualization\Charting\DataPoint\DataPoint.cs

but there is no such file there!

what goes wrong??
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