Recently it appeared to crash very easily with loss of data. Essentially if I define a section and work on it and try to change the reinforcement or other parameters everything crashes and shut down. This is a major issue for us as when it happens we have to re-define the section from scratch which is very time consuming (some section are quite complex). Could you please help us to understand how we can fix this. We have a very tight program therefore and a prompt response would be very much appreciated.