When you created your custom section file, did you follow the basic steps outlined here?
communities.bentley.com/.../24246.creating-custom-structural-sections-in-aecosim
Also, working from Stefan's mention of scale, what did you use as a template for that new section file, and was it a metric or imperial units XML file?
communities.bentley.com/.../24246.creating-custom-structural-sections-in-aecosim
Also, working from Stefan's mention of scale, what did you use as a template for that new section file, and was it a metric or imperial units XML file?