Civil3D Geology Interpretation keeps crashing.

I am attempting to follow the workflow for linear modeling at  Workflows for modelling geology along linear routes with AutoCAD Civil 3D . 

I reach a point where hatches are plotting in the profile views, but then trying to edit these profile views crash the program.  The error I get is below. 

 

Is trying to edit the geometry in the boundary profile views the issue?  

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