I think you might find this interesting. After installing FSX SE, I used the same setting I uesd in FSX Box Edition, including the Autogen setting. I did my test flights in the Caribbean. I think we can agree it's less Autogen intensive than cities like DFW, ORD and YYZ. But Here's the interesting part, like I said before, after removing KB2670838, the Terrain.dll CTDs stopped. Since then, I have successfully completed flights between MIA, DFW, YYZ and ORD without a single Terrain.dll CTD.