1.19d - Set Spawn No Objects Flag

Every map I make that I save with the "Set Spawn No Objects Flag" checked crashes within a few turns when I load it up. Resaving the map with the option turned off seems to fix it, as I can load it up and play turn after turn. I can send you two versions of the same map, one with and one without (I only saved the last one I made) if it's necessary, but this seems like the kind of thing you guys and gals should be able to reproduce rather easily. I place NPCs and resources but no goodie huts. I'm using 1.19d as per the title, but this may have been occuring in 1.19c as well, I can't recall if this started happening before or after I downloaded the last patch.