changing lot names crashes my game

Heey every one. So I've been trying to make my own safe file and I do not use any mods while I'm working on it. And when I try to change a lot name, usualy the 4th one in a row my game crashes. Is this a known thing? It has not happend before, but now in Windenburg it happend twice now. And I've been getting a lot more crashes in my other saves, but in them I do use mods and CC. I am constantly saving so I don't loose all the progess I'm making. And I have all the packs and use a pc, if that helps.