This thread is based on my own experience. I dn't mean that any of the mods listed below are bad or they are guaranteed to crash your game. It's just I met with those problems and locked down that those mods may cause my city unplayable.I though it is a good thing to share them with you all. And I wish that anyone had a game crash and eventually locked down the mod that caused it, could follow this thread to post your experience. It can be a great help for other ppl who met a crash and dn't even know where to start. Small parking Lot : A single download may be fine. But when you have lots of mods, it may conflict with some mod and make game crash by the time of auto saving. Had it for a week, and finally locked it down and removed it from my city. Now no more crashes. Taxi and Bus Depot: Similar problem like above. It can be fine, but has a potential to conflict with other mods and crash your city. Powerline, Pipeline, Railrack Pack: Had couple crashes when I place down Pipelines. But overall it is fine, railracks and powerlines works great, still has this mod in my game. EnhancedBuildingShaders: This mod is required to show airport runway correctly. But it has been concluded in Altris' ShaderPack. When you have both two patches, some building may result in a D3D render failure and abort your game.