Rhinonest failed to get a correct result

Hi,

I encountered a problem when trying with Rhinonest sdk example on http://www.grasshopper3d.com/forum/topics/rhinonest-2-5-sdk. I compiled the solution with RhinoNestTools.dll shipped with Rhinonest 2.5(2012-03-06) and found it could not nest appropriately. 

I attached a screenshot. Curves to be nested are on the grid. The result turned out to be quite messy with all the curves scattering around.

Could anyone tell me what might be wrong?

I attached the compiled dll and the .3dm file.