ZBursh 3.5 R3 keeps crashing

I was always interesting in learning to use ZBrush. The problem is that I always have negative experience with ZBursh. Like recently I am trying to get back to learning ZBursh again, but ZBursh 3.5 R3 just keeps crashing on my Lenovo X60T laptop. Since I have tons of other stuff to learn, so screw you ZBursh, and I'll get back to you say ... errr ... 6 months later.