Dimension X I've now given CL all the info that I can but there seem's to be no rhyme or reason to what actually causes this memory problem, I've worked on quite large scenes and had no problem at all only to then do a very small scene and have the whole thing fall over! Don't get me wrong anyone, I DO understand the complexity of the problem faced by CL to do something about this and would be only too happy to sit and wait patiently for the solution. What I can't put up with is CL's apparent reluctence to let their loyal customers know what the hell is going on, and let's face it...you've got to be damn loyal to still be using such a techy piece of software for so long!