dgnpurge enullobject error

[jim78b]

hello i know that i use dgnpurge sometimes don't work and i must use dxfout and dxfin for work dgnpurge, this commands remove the preview of dwg files in acad.

so i must everytime i use this commands in register of win7 and change value of select file to 1; there is some guy who is able to do a lisp for launch directly ?

thanks

 

 

 

 

 

my path is:

 

 

HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R19.0\ACAD-B005:409\Profiles\>\Dialogs\Select File.