Great person improvements aren't accessing luxury resources properly when placed on them. I thought customs houses and landmarks were able to access them but it doesn't seem to work. Manufacturies can access strategic resources like iron but not gold, gems or silver which they ought to be able to (or at least they did previously).
And yes, this time I did remember to clear my cache and delete old versions out of my mod folder
And yes, this time I did remember to clear my cache and delete old versions out of my mod folder
