I'm trying to cut cross sections through an intersection that has been modeled with secondary alignments. In order for the sections to look correct in the sheets I'd like to cut them as they were generated. I thought I could do this with custom linestrings, but it isn't working. The first location with only a minor bend in the linestring added find, but when I tried to add the second one with more severe bends it just errors saying "Unable to process 1 elements." See picture attached for a simple graphic of what I'm trying to do. The linestring that is highlighted is the one that errors.
Anyone have any ideas?