I'm also suffering from constant crashes to desktop. I'll provide a bit more information for you:
My computer is a desktop.
AMD FX-8350 CPU water cooled
ASUS Sabertooth with AMD 990FX chipset
32GB of DDR3 1866 Corsair Vengeance Ram
MSI R9-390 8GB GPU with the new AMD drivers loaded just this morning.
6TB of main storage. 1TB SSD program disk.
My observations: I was using a 3D render that was specifically made to test your program out. After having it crash while I was in the middle of a 'makeover' three times, I started saving the project after each little step. (i.e. Save after shaping left eye; crash; save after shaping right eye; crash; save after shaping mouth; crash...etc.etc.)
Your program is great, and I can see how it would be extremely useful, however, it is beyond aggravating to have the program crash every few minutes.
Also, it would be extremely useful for the program to be able to import/export .PNG files, and not just the super-lossy jpeg format.
The included image is what I did today...