This error message may be caused by not having each individual pipe named in the table. When creating a pipe run:
Draw a polyline along the pipes to be profiled.
Define an alignment from this polyline.
Set the desired surface to be "current".
Define and name the pipe run from the Pipes menu.
Sample and create a profile from "Profiles".
Import the "conceptual profile" from pipes onto the profile.
Select "concptual profile, edit data", and the editing table for the selected run will come up.
Use the pull-down menu on the table view to choose the "pipes" data table, on which the first column must have a name for the individual pipe segment.
I usethe CivilDesign modules quite regularly at work. If what I wrote isn't clear enough, please don't heistate to ask more questions.