Hi Pat, I was having the same problem that you are having. I tried to download the Cularis from a disc that I got from my cousin in Germany. It screwed up my whole system, everything was jerky. I tried to delete it without much luck. Then a friend mentioned to go to restore and go back a few months and that got me back to where I was. By the way my favorite plane is the Bucker Jungmeister, did you ever try to fly it? Just for the heck of it try and land it without a bounce, impossible! Rayjay