Rebooted and restarted from scratch. Deleted all exchange files and loaded G3F with a different dress. Decimated that by 50% and tried a simple sitting pose. The simulation ran to a point where one leg was draped and the dress over the other leg floated up towards her chest and then stuck there. I tried dragging that part of the dress down and holding Shift to continue but, to be honest, I could create a morph in Blender quicker than watching this work. It is just refusing to drape anywhere near the leg.

If that's what happens with a simple pose I hate to think of what happens when the cloth is colliding with itself. I'm sorry to be so negative but, so far, it is a total waste of my time and money.