Hi!
Just a few days ago, I got Fallout NV for my computer, and my husband got me a few mods. Really, it's not very many. 13, if I'm counting it right (I don't know, but for Skyrim I'm got around 120, so for me 13 isn't a lot). It worked well and fine after installation, and to my big surprise I actually liked it.
But today it won't work. *sadface* I'm using NVSE, and whenever I try to launch it, I get an error that says something like "Fallout NV stopped working - Windows is searching for a solution" (I'm not sure exactly what it would say if my PC was in English). All I know is that it worked fine yesterday, and today it doesn't.