I see that GFX is now a paid software, and Admins are shutting down any discussion of the subject. Now I think it is worth paying for, and supporting future development, but before I part with any cash, I'd like to know if there is any difference between the paid version and the free version I already have on my PC. There are no release notes for 4. Also, as it seems to have happened 'quietly' with no 'Sorry guys, but to continue with the project, we must charge...' announcement, and the rather terse response to a question about it. I wonder if my money will be better spent with a more professional company.