Welp I spent 4 hours to figure out why my modded F:NV was crashing. I realized it was from a mod called feng shui. (Amazing mod if you are a person who obsesses over decorating their base, like me.) There is an optional mod for some key map or something. This mod is also a port from Fallout 3. So the optional feng shui key map had feng shui.esm, but the feng shui mod I had is called feng shui NV.esm so that was the crash. That was literally it, a ' NV' and it took me 4 hours to find that out! To say I was extremely pissed is an understatement.