Instantly, as soon as I load the game, and if it's a new game, it crashes during the little movie of the shuttle flying. This is if I set the cost and maintenance to 1, the bare minimum permitted, apparently. I just set them both to 5, and it seems to be working fine (except that sometimes when I go to build, advanced spacestations are sometimes available, and sometimes not. Strange, and never had that problem before.) Anyway, I guess that's what I get for goofy editing, but I still remember my first few play throughs back in the day, before I discovered RebEd, and man, they took a long time. Incidentally, I just reinstalled the game this morning (reading Labyrinth of Evil reinspired me), and I haven't installed any updates. But I had in the past, and I've always had this exact problem. Only editing Alliance cap ships; I've cheesed down Empire ships with no difficulty at all.