i would appreciate any help with this error in acad 2009

 In what command it happens this error. Or post your file to check about it. 

Well here's your first problem: you're using AutoCAD 2009, one of the most upsetting programs ever made.  AutoCAD 2007 and 2008 were absolutely perfect, then they go and ruin it with this worthless program.  I would suggest throwing that in the garbage where it belongs.  Thanks!  Good luck!