Hello, I hope I'm posting in the right area. I have been modding BTS using the fabulous BUG mod as a base and attempting to give each civilization a unique unit art style. The game works without fault up until about turn 1050 or so when I get a crash. The crash makes me think it's a missing art define because it doesn't occur every time and usually occurs when switching to world builder. At first I thought it might be a missing Great person art define because it wouldn't always happen on the same turn when I reload, but I have combed my XML for any missing art defines, no luck. I have also, using world builder on turn 0, added every unit for each civilization, and added each tech by era to check the different art defines when applicable. I cannot reproduce the error. I've even downloaded the artdefinechecker utility and according to it my mod has no missing art defines. Is it possible that the increased number of unit art styles and/or unit art defines is causing this crash? I have only tested this in singleplayer so far but am making it to play with two others. Hopefully my ambition does not outstrip my abilities. If anyone has any ideas that I can try, or any more info I should include, please share. I am not trained in computer sciences so feel free to dumb talk, I probably won't notice Thanks for your time everyone.