I was asked to help figure out why a certain lisp routine which worked with Autocad 2014 doesn't work with AutoCAD MEP 2015.
Although I don't know much about Autolisp, I thought I'd give it a try, but I've gotten to a stopping point and cannot get past it.
I am posting the lisp routine along with some associated dwgs and a screen capture of what it's supposed to look like when it does work in hopes that someone can assist with this.
Your help is greatly appreciated.
dflex.lsp
FlexDuct.dwg
FlexDrop.dwg