While trying to start a new world with mods enabled, Factorio 0.14.21 stable crashes with the error in this post's title. The only thing I changed was to add RSO and delete angestriggers-disableRSOmode. Is this a bug with RSO or a bug with Angels mods or a bug with vanilla? Is there a solution/workaround? I can provide a full mod list from the crash log, but it is basically most of bobs, all of angels, and disable-infinite-ore.

Thanks in advance.

I would need mods package with map string to be able to check.
RSO has an explicit protection from trying to spawn 0 ore so I don't know how it could trigger this. And message is quite cryptic since it comes from Util.cpp - does it have any stack trace?