Dear
I've just  downloaded and installed into my PC the X-13-ARIMA-SEATS program.
However,  when I use the option x12arima in the command "arma" the gretl returns:
"Failed to run x12arima. The system cannot find the specific file."
I must say that x12arma is correctly located at Tools/Preferences/General/programs.
I would be grateful for help to solve this problem
 

José M. M. Belbute, Ph.D.
Department of Economics | Centre for Advanced Studies in Management and Economics (CEFAGE)