Hammer decided today that Ferrum would be better off without point entities, and, being a paragon of selflessness and courtesy, took the time and effort to delete them all for me. I read in a parenting book once that you should never be angry at your child for something they did wrong if they did it with good intentions, so I sat Hammer down for a stern talking-to, in which I explained that, while I appreciated that it went out of its way to improve my map, I would not tolerate any further tampering with my work. I followed this up with a vicious beating with my studded leather belt and then dug through Hammer's autosave files until I found a functioning one.
Fear not. My work shall continue.