I’m sorry, Sven, but as you can see, I did start a new thread. As I said before, I have a need to loop through quit a few .gretl files I get from my students and to find something inside each of them, for example model outputs saved in the .gretl files. I can’t do loops with .gretl files like I do with .gdt files. Here is a sample script: <hansl> string path = "/Users/fred/Documents/UIBE/22-1/ECON301/Data4Students/" string studentnames = path ~ "names.txt" string namesread = readfile(studentnames) strings anames = strsplit(namesread,"\n") loop i=1..nelem(anames) string fname = anames[i] dataname = "@path@fname.gretl" open \ @dataname #--preserve --quiet scalar incomecoeff = model_income.$coeff[2] # do something here with what I found, for example. endloop </hansl> As I tried to figure out why, instead of looping .gretl files, if I just using a script to open one of them, there is a message about: “Opening a new session file will automatically close the current session. Any unsaved work will be lost. Proceed to open session file?” There seems to be no way to turn off this warning, so the script gets hang on this warning message. Any suggestion? Fred