I'm having issues using the "split mesh with projected curve" function.

There are times when I project a curve onto a mesh, where the resulting "polyProjectCurve" remains intact as 1 curve.  In these cases I can then select the mesh and the projected curve and the split with projected curve funtion works great.

But there are times when I project a single curve onto a mesh and the resulting curve is chopped into several segments.  When I then try to split the mesh with this projected set of curves, I get the following error.

// Warning: Can't perform polySplit1 on selection // 

I've tried selecting both the parent polyProjectCurve node and the child nodes individually.  I get the same error regarless.  Any ideas on how to get this to work properly?