"For example, if you have a large number of splines in 3DS Max 4.2, add a cross-section and a surface (this is a pretty common routine), dramatic changes to either the threshold or the steps dial can easily crash the most powerful machines. But if you don't know why, then you assume it is a bug, when in fact, it is simply the software being too powerful for your machine. " Damn, girl... Great example! As a 3ds max user I know EXACTLY what you mean. =D Paul