DesignCAD 3D MAX v.
19.1 update Save it to your desktop and run it from there. It is
important that you check, which version of DesignCAD 3D MAX v. 19 you
have. Start your DesignCAD 3D MAX v. 19 and select Help => About
DesignCAD..., and if it says 19.0, you run this
update.