Yeah it says to set file. I'm doing just that, hitting the iteration button and all is well. I made a hot key for the iteration button but I get that set file message. Pretty much the hot key isn't working to save iterations
Second iteration, each concept is built from sections of previous concepts myself and others preferred Third iteration, finalising form and trying to decide on a variation.
been mucking about with a simple stone generator for max it's basically a geosphere with random clipping planes (the demo object has a mesh smooth with 2 iterations on it plus some box mapping). Anyway the script is attached for anyone who wants to play :)
planarity is a new concept for me but while checking the support loops... i realised this deleting the two faces solved the problem. but i guess 8 edges were not enough for the hole, i had to increased the subdiv iteration from 2 to 3.