I own bobcad 21, bought last year, not even opened yet. I got a sales call for a good price on bobcad 22 and bought that last week. Just arrived today. I should have done my research. Seems there's lots of problems with stability issues here. I think I'm just going to spring for something that has a better rep., even at a price. Just wondering if Bobcad would take a return on an unopened package?