I have downloaded and installed the program x12a_install.exe. But when I  do select a variable in the gretl main window, pull down the Variable menu, select "X-12-ARIMA analysis" and choose to saving the seasonally adjusted variable, the follow error message appears:

 

"C:\Program Files\gretl\ wnuplot.exe\" "C:\Documents and Settings\HP_Administrator\Application Data\gretl\gpttmpa02356": exit code 1.

Can you help me again, please??