Hi. I downloaded DraftSight 2015. I've used it for about 4 hours and it has frozen 6 times to where I had to shut it down and restart it. I then tried uninstalling and reinstalling and I'm having the same issues. I'm on a brand new computer that I just started using. Intel Core i7-4770 with 3.40GHz, 8 GB RAM, 64 bit, Windows 7 Professional. Any help would be appreciated.