I keep getting this error when saving a drawing containing sample lines for section views. AUDIT and RECOVER show no errors. I've determined that it is being caused by using stacked "GenericPavementStructure" subassemblies with the "parameter reference" box checked to get the width value from the bottom width of the assembly above. If I don't check the box, there's no error.
I'm using Civil 3D 2010 and up to date with all the service packs. Alignments and profiles are datashortcut into a Corridor file. Alignments are datashortcut and Corridor file is xref into a Sections file. Only the Sections file has the error. Help!