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(defun c:linesthickness-0 ( / s i e ex ) (prompt "\nSelect LINE entities...") (setq s (ssget "_:L" (list (cons 0 "LINE")))) (repeat (setq i (sslength s)) (setq e (ssname s (setq i (1- i)))) (if (assoc 39 (setq ex (entget e))) (entupd (cdr (assoc -1 (entmod (subst (cons 39 0.0) (assoc 39 ex) ex))))) ) ) (princ) )

I think I commented earlier, it would be far more convenient for us if you post the code in the same thread as the question was asked, rather than starting a new single post thread without any context in another forum.

On Win7 you might need to set the Enable 32bit Applications to TRUE in the Internet Information Services Manager under the Application Pools, DefaultAppPool, Advanced Settings. My ACAD2000 was missing the geometry under the Properties, now it works. Original program copied over from an earlier windows. And, by the way ReMark, I do 3D modelling of engines, frames. Maybe not as easily as newer programs but this one is free. The DXFs import into GibbsCAM just fine.