Answer its questions. If an error pops up, press Y to generate anyway, or press N or any other key to cancel. The error, from the few tests I have done, doesn't seem to make a bad sector, but weird stuff may happen, I don't know. UPDATE: This project may occasionally freeze; I think I have fixed the issue. If it freezes, report it IMMEDIATELY. I swapped from my old broken drawing system to an experimental single script one that uses data from the clones only.
Made some optimizations to the code. It runs faster and looks a bit cleaner. Also islands should be less of an issue.