After several clean installs app still crashes. Draw a polyline with several arc segments in it. Dragging points in the polyline to move them more than 5 or 6 times will crash the app. Thank you, Dassault Systemes, for once again fixing what wasn't broke and forcing an upgrade to yet another untested, buggy POS. It's just astonishing that this caliber of workmanship goes back almost 10 years.