I only get 2 choices when selecting corridor feature line to create profile - ETW_base, and ETW_sub. My Subassembly has 2 pavement sections, a base and subbase section. I need the top of pavement profile. What am I missing.
You should be able to get a profile from any featureline that is currently being displayed in your corridor. Check the featurelines tab in the corridor properties dialog and make sure that ETW is turned on.