Have you got an extra pencil?
Sure have! And, Coleman and Tilley lamps, out back, in case the power goes. Never be without a pencil and something to draw on, as I was instructed, some years ago, by my Engineering Professor. He has proven to be correct, in most things.
It's worth mentioning again, that trying to produce AVI files greater than 2GB is a bit pointless/disastrous, using Montage Center. Saving all the images as jpegs, for large animations, and then using something else (Premier Pro 2.0, for instance), is a better way to create the final product. I'm sure this cannot be too difficult to arrange from within AnimationLab/Montage Center, but, perhaps the commercial payback for doing so is not that great. However, it would be nice to see this software catch up with today's needs.