ah. Ive had no problems with crashing so far. Was gonna see if you had any suggestions for a kind of backface culling effect in Zbrush. Ive done the face and got down the front side of his torso, but as I spin him round to do his back, it gets really hectic cause all the front topology is showing through. Reading on ZBC it seems thats just something you have to put up with. Theres some back and front transparency controls but they have their own drawbacks...