Nikke mission crashes.

Trying to complete the Nikke missions, but am unable to because after completing either "Scarlet and Volt's Quagmire" and "Scarlet and Volt's Circumstance" in the Great Desert, it crashes on the loading screen. No crashes whatsoever anywhere else or loading into different zones, only after loading out of those missions. The picture is the only error message I receive. I had mods, but have sense uninstalled all of them and crashes continue. Any help would be appreciated.