@Ami - Yes I do have all DLCs installed, though the quest chains are already broken because I failed both Slingshot and Progeny missions long ago, and here is the last part of my Log entry for that CTD: [0029.99] XComMapSelection: Evaluating previously played missions for type eFCMType_Assault [0029.99] XComMapSelection: Found matching map eFCM_ChryssalidHive new count 1 [0029.99] XComMapSelection: Found matching map eFCM_TruckStopAssault new count 2 [0029.99] XComMapSelection: Found matching map eFCM_HeliAssault new count 3 [0029.99] XComMapSelection: Found matching map eFCM_ResearchAssault new count 4 [0029.99] XComMapSelection: Evaluating mission type to present... [0029.99] XComMapSelection: Adding possible type eFCMType_Assault as its count matches the least played count of 4 [0029.99] XComMapSelection: Adding possible type eFCMType_Bomb as its count matches the least played count of 4 [0029.99] XComMapSelection: Skipping type eFCMType_Extraction as it has no valid maps. [0029.99] XComMapSelection: Skipping type eFCMType_Rescue as it has no valid maps. [0029.99] XComMapSelection: Explicitly removing assault type as there are other mission types available. [0029.99] XComMapSelection: Chose mission type at random: eFCMType_Bomb. Filtering maps... [0029.99] XComMapSelection: Removing mission eFCM_TrainyardBomb - already played this game, or too early [0029.99] XComMapSelection: Removing mission eFCM_SlaughterBomb - already played this game, or too early [0029.99] XComMapSelection: Removing mission eFCM_BridgeBomb - already played this game, or too early [0029.99] XComMapSelection: Removing mission eFCM_CemeteryBomb - already played this game, or too early [0029.99] XComMapSelection: Potential map: URB_TrainStation_Bomb (Mission Variant Bomb Defusal Train Station) [0029.99] XComMapSelection: XComMapManager::Selecting Random Map: TimeOfDay(0), UFO(0), Region(4), Country( :cool: [0029.99] XComMapSelection: XComMapManager::RandomMap: (0) URB_TrainStation, URB_TrainStation [0029.99] XComMapSelection: XComMapManageer: RandomSelection using fallback matches [0033.55] Log: === Critical error: === Fatal error! Address = 0x82d06c (filename not found) [in C:\Program Files (x86)\Steam\steamapps\common\XCom-Enemy-Unknown\XEW\Binaries\Win32\XComEW.exe] Address = 0x82d06c (filename not found) [in C:\Program Files (x86)\Steam\steamapps\common\XCom-Enemy-Unknown\XEW\Binaries\Win32\XComEW.exe] I tried everything as outlined in Troubleshooting/Read me sections including un/reinstalling the entire game because I suspected it was perhaps related to an executable file corruption, but the CTD still persists. @johny - I'm using the latest version of LW, 9a, and playing on Normal difficulty with only Strict Screening and World Diversity SW options enabled. I gained China and Canada back by assaulting the alien bases, but lost China again for a total of 6 lost so far. * one more thing I'd like to note is the fact that Base Defense mission still hasn't taken place this late into the game, so perhaps its trigger is what's causing the CTD? Let me know if there are any other parameters that would help you identify the problem please, and I'd just like to take this opportunity to thank all of you guys again for your amazing works - It is simply incredible! Thank you.