https://forums.autodesk.com/t5/autocad-forum/al-s-steel-mill/m-p/5831213#M310678 <P>A wild guess because I don't use 2015 yet.</P> <P>Open your acad.pgp and take out stl = stlout</P> <P>(If this command is in there)</P> Thu, 24 Sep 2015 13:59:47 GMT Patchy 2015-09-24T13:59:47Z