Landing Pilatus: Approach training mission

Hi! I have troubles landing the Pilatus!When I put it down on the runway, cut throttle and let it slow down.The tail goes down.As it reaches taxi speed, it suddenly turns left, put the right wing into the ground and crashes!!Is it correct? What am I supposed to do?I'm trying in the approach training mission, but I don't see any wind in it and the approach goes smoothly.Any help?Thanks a lot!