Found out what was wrong. I mistook the window that asks if you want to enable missing plugins for the one that asks if you want to load with missing plugins. I was able to make a clean save, and I'll try to replicate the crash to see if it worked.
EDIT: Nope, still got an error that DynDOLOD can't load _NG_Worlds.txt
EDIT 2: Even after a complete purge of my Data folder and a DynDOLOD installation from scratch, it still can't load _NG_Worlds