I have recently downloaded this program BUT keep having trouble with it. For example, when I try to add new drivers to the data bank it does NOT save it. I have tried it several different ways but to no avail. I even un-installed and then re-installed but get the same problem. So, is there another here that has had the same problem? Better yet, is there another program that I can download for free that will allow me to model some drivers in various configurations?? If not, is there a way to fix this problem OR am I doing something wrong? Please help if you can. Thank you for your time.