Existing Ground Cross Sections

Hello,

I'm new to GEOPAK.  I am trying to cut existing ground cross sections and keep running into the same error. "There are no Cross Section Cell to process with regards to current settings."

I used the Project Manager dialog box to create all the following objects

I created the existing ground surface by importing point data from an ascii file.

I then created the road centerline chain using the cogo manager.  It's a very simple chain.  Just a straight line from the center of one intersection to the center of another.

Next I created a cross sections patterns drawing and created my pattern lines.

After that I setup the cross sections dialog box as shown below

But I must have missed a step or setting someplace because I always get this dialog box

I am running PowerGEOPAK version 08.11.09.493

On a Dell Precision T3600

Windows 7 Professional 64 bit, 8 GB of Ram.

With Nividia Quadro 600 graphics card.

Any advice would be greatly appreciated.

Thanks

Jason