I recently installed the latest stable Cura from Lulzbot, and after following the directions on removing old files, it works fine. Slow to load, but I think that typical. However, the app will simply crash? quit? go away? randomly. It can be after 10 minutes, it can be 4 hours. But ultimately it disappears from the desktop and needs to be restarted.
I’m running it under Windows 7.