Mostly I had the Windows (WinProf 7 / 64 ) message: "Simplify did not answer" or "Simplify has no reaction" (translated from german message text: Simplify reagiert nicht mehr; Simplify antwortet nicht!); no blue screen or other shut downs, other programs are running without influence of this.
So as Wirlybird has described it, the program crashs with one stroke while an action (mouse movement or similar) happens only one times for me, but how to identify the trigger ...?
The last days I print very simple things and small parts, no support or more than 2 processes.
Nonetheless, the earlier versiones had crashed I can count it on the fingers of one of my hands over 4 years starting on V 1.1 .