all maps or just the giant ? and with your CS or the default ones ? I think that all this region are set to have oil (maybe not exactly in North Dakota or Montana, but near at least. Alaska have oil, but Jamaïca ? there are in mexico gulf, and could be in venezuela or just north in the carribean sea. that may be a conflict with another mod using ingame.xml I'll try to remove that compatibility issue in one of the next version, can you try with this mod only to confirm the issue ? setting the CS to 0 should work, but the removing is done by the part of the mod called by ingame.xml, so if another mod overwrite it, you'll get CS, a lot, whatever your selection is. if it's the case, I thing the readme of Thal's modding utility explain the merging of ingame.xml of different mods. can you use the huge map from vanilla game without crash ? sorry, can't test with this combinaison of mod right now... it crash always at the same time ? during AI turn ?