After I bought ide 6 and started using it, I started having problems. I had no problems with 5.511. There is a new problem for a few days. For example, when I want to open another floor plan or 2d drawing window, the screen freezes and does not recover without closing the project. Every time I go to autosave and get the final version of the project It is not very final, so I have to redraw the things I have drawn over and over again.