3ds Max: Morph Targets controlled useing Manipulators

Set up multiple morph targets in Max 4, created some manipulators and wired them to control the targets, works fine Until I start to set some keyframes and slide forward and backward and forward though time, It just keeps crashing


Any ideas, before I though the monitor thought the window and become a tree surgeon. Oh what a life in a lovely forest, back to nature, smoking weed, and singing at the top of my voice, Im one step away, only you can stop it


Cheers