InRoads Bridge Geometry - Create Girders

I would like to use the InRoads Bridge Geometry tools to quickly layout girders on a tightly curved bridge. This would be a very useful tool if I could get it to work. Instead of manually drawing girder lines and checking max/min deck overhang, max/min spacing, etc. I could just tell the program those parameters and it would find a solution.

I have a geometry project file that contains the horizontal and vertical alignment. I am able to create the slab fascia and abutment/bents fairly easily with the bridge geometry tools, but when I try to create the girders, I get either 1 of 2 errors: (1) Incomplete or no abutment lines found, (2) Duplicate alignment selected. What could I be doing wrong?

I've made sure that my abutment/bent lines cross the slab fascia and that the alignment is always activated. I am using Power InRoads V8i SS4 08.11.09.904