Dear Allin Cottrell I'll answer using your text. What happens if you try running wgnuplot.exe (it's in the gretl folder) directly? 1. I see this: [image: Inline image 1] Do you have x12arima installed and is its location correctly stated in your gretl configuration (under /Tools/Preferences/General and the "Programs" tab)? Allin Cottrell 2. Yes, I've the X12 ARIMA installed. But when I need it greltl returns that the file is not there. JMMBelbute