Nope, I just uninstalled NMM
Ugh...There's your problem right there.
If you have Fallout New Vegas on Steam, Close Vortex, then delete the DATA folder in Steam\steamapps\common\Fallout New Vegas\
Then, right click on the game in your Steam Client, pick Properties, and select LOCAL FILES--------->VERIFY INTERGRITY OF GAME FILES
Wait that won't get rid of the DLCs right?