[Gretl-users] Bug?

Dear all, I am sending this email because lately I have observed changes in the way gretl interacts with octave. I am attaching a simple program for illustrative purposes. I think that such a program should work in any case. I think it works in linux with no problems (based on earlier experience with more detailed programs to produce graphs). The issue is that I was able to run this program under windows 7 with earlier gretl and octave versions, in particular it works under gretl version up to 2016d and old octave versions - works with octave 3.4.3. However, under win 7 it does not work with late octave versions - does not work with octave 4.2.1. In any case, I cannot make it work under win 10, no matter which version of gretl (I have used 1.9.92, 2016d, 2017d) and octave (3.4.3, 4.2.1) I use. Could you take a look on this issue? Kind regards, Andreas Zervas P.S. I originally started coding with octave because gretl does not offer a facility to produce subplots (graphpage is an imperfect substitute, and accepts only up to 8 graphs I think, while scatters accepts only one variable on each graph). I also did not like the idea of learning another language just to plot, when I am familiar with matlab / octave. Any plans for such a feature?