Game crashes with mods that alter terrain

[karraker0chris]

My game of skyrim crashes whenever I try to play a game using a mod that changes the terrain, adds structures, or adds rooms to existing structures (e.g. The Arena III, The Secret Room To Breezehome, etc.) I have tried changing the load order manually and using the BOSS program to change the load order. Could they be reacting adversely with high-res texture packs? What kind of mods would affect them the most? Should these mods that add rooms be loaded first or last? please help...