Experienced this once before, so I re installed everything, and took a hiatus. Basically when I try to use my Siphonotares in an offesive siege, I get a CTD. When I lay siege to a castle, I get a CTD, when I attack a Hungarian army, CTD. Come to think of it, all of my crashes were when I was attacking/fighting Hungarians. Any ideas/suggestion? I'm using 6.4, Savage AI, perm watchtowers, max graphic settings, video drivers up to date, 4 tpy, with slight changes to campaign_script, and settlement_mechanics, and the new Roman/Kwarezm skins.