Datawindow save as pdf

I am  using pb ver 11.2  and  windows 8.1  64bit OS .I am trying to save datawindow into pdf file. I am using the following command

AppI can save the datawindow in pdf file but I cannot  be done in another new machine windows 8.1.

I did the following step

1. Install ghost script

2. Install ghost script converter

3 the command failed when I run the exe in another machine.

my command li_ret = dw_fleetdet.SaveAs( ls_filename, PDF!, true)

if  li_ret=-1 then

MessageBox("Error","PDF file cannot be created",stopsign!)

Return

end if

I can run exe and can save pdf in my machine

Please help looking for an expert advise