I was among many of the users experiencing random crashes. I felt kinda obligated to share a possible solution I've come across. It's certainly not an absolute or guaranteed fix, but it did work for me.
1.Boot Up Mineimator
2. Close all windows except Mineimator
3.Do not minimize Mineimator (unless you're finished with your animation and have saved)
4.Avoid opening up any other windows/applications
I used to experience random crashes every five or ten minutes. However, using this minimalist approach I haven't experienced any crashes for the last three hours.
Hope this worked