https://forums.autodesk.com/t5/autocad-forum/cannot-undefine-a-command/m-p/5533390#M338040 <P>Couple of thoughts on this.</P><P>1. Is your custom LISP routine loaded at startup or do you use appload to load it when you want it.</P><P>2.&nbsp;As Brian said, edits to the PGP file should be at the bottom of the list.&nbsp;Did you redifine W to&nbsp;the command&nbsp;name for your LISP?</P><P>3. Did you remember to&nbsp;use the&nbsp;REINIT command after you edited the pgp file?&nbsp;</P> Mon, 09 Mar 2015 14:33:05 GMT sthompson1021 2015-03-09T14:33:05Z